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1 I 1 C C C printf I I CPad(bcpad) I ( ) printf II II II III III

2 (1 ) scanf() IV IV ( ) if switch V V for break continue while do-while VI VI VII

3 I (Version ) 1 C C 1972 AT&T (Dennis M. Ritchie) C OS UNIX C C 1.2 L A TEX ( ) pdf C ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz ( )!! 1.c.c ( ) bcpad ] 1 1

4 ( ) #include <stdio.h> int main(void) { printf("hello, C world!y=n"); return 0; ( ) 1.2. ( ]) 4D 5A FF FF ; 1 1 2, #include <stdio.h> int main(void){printf("hello CY=n");return 0; ( ) 1.3. #include <stdio.h> int main(void) { printf("hello CY=n"); return 0; 2 2

5 #include <stdio.h> int main(void){ int i,sum; sum=0; for(i=1;i<=10;i++){ sum=sum+i; printf("1 10 %d Y=n",sum); return 0; C ( ) int main ( void ) { int i,sum ; ( ) int main(void){ int i, sum; intmain(void) int main(vo id) ( ) int ( ) main ( void ) {int i,sum ; 1 1 #include<stdio.h> # 3

6 1.4.3 ( ) 1 // /* */ 1.5. ( ) #include <stdio.h> int main(void) // main(void) { printf("hello CY=n"); return 0; /* */ ( ( ) ) E2379 hello.c 5: ( ) ( main ) W8070 hello.c 7: ( main ) *** 1 errors in Compile *** (i) { ( ) ] 1 (ii) ; ] : (iii) ] (iv) { ] 1, C3( 20) 6 4

7 I 2 C 2.1 C 2.1. Hello C 1 #include <stdio.h> 2 int main(void) 3 { 4 printf("hello CY=n"); 5 return 0; 6 Hello C (1) bcpad (2) 1 #include <stdio.h> (.h) ( ) (stdio.h) 3 100% stdio.h C { (3) 2 main(void) main int void main() main(void) Standard I/O(Input/Output) 5

8 main(void) int main(int argc, char *argv]) int main() void main() (4) main() 1 (stdio.h ).) fclose, fopen, printf, scanf, getc, getchar (5) main() ( ; ) printf() () (6) 5 0 main() ( )MS Windows Linux OS OS 0 main() II 2.2. int sum(int a, int b) { return a+b; sum() 2 a=sum(10,20); z=sum(x*x,y*y); p=sum(sum(2,3),5); 6

9 2.2 printf I printf ) ( ) printf(, ); (abc,, ) Y=n %+ 10 %d #include <stdio.h> 2 int main(void){ 3 printf("hello"); 4 printf("c"); 5 return 0; 6 HelloC #include <stdio.h> 2 int main(void){ 3 printf("helloy=n"); 4 printf("c"); 5 return 0; 6 Hello C 2 3 Hello Y=n printf("helloy=nc"); 2.4 7

10 ( ) ( 4.4 ) int a, b int x( ) #include <stdio.h> 2 int main(void){ 3 int a, b; 4 int x; 5 a=5; 6 b=3; 7 x=a+b; 8 printf("a=%dy=n",a); 9 printf("b=%dy=n",b); 10 printf("a+b=%dy=n",x); 11 return 0; 12 a=5 b=3 a+b=8 a, b, x %d %d #include <stdio.h> 2 int main(void){ 3 int a, b; 4 a=5; 5 b=3; 6 printf("%d+%d=%dy=n",a,b,a+b); 7 return 0; 8 5+3=8 6 a+b a b 8

11 I 3 I 3.1 CPad(bcpad) CPad 4 CPad Borland C++ Compiler Windows GUI Cpad Borland C++Compiler bcpad bcpad (1) 1 OK] (2) D:Y=Documents and SettingsY=usersY=My documentsy=c OK] 9

12 (3) (4) (F)] (A) (5) 1]* Hello.c (6) 2 (R)] make Ctrl] +F9] (7) (6) (R)] (make )(F) Shift] +F9] 10

13 3.2 I S15M999 ( ) :S15M999 : : printf() %d Y=n % Y= ( ) % Y=% " Y=" Y= Y= Y=Y= 3.2. %, 1 Y=150 5 "20% ",? ( ) ABCDEFGHIJKLMNOPQRSTUVWXYZ ( ) 11

14 #include <stdio.h> 2 int main(void) 3 { 4 printf("hello CY=n"); 5 return 0; ( ) :S15M999 : : 1 Y=150 5 "20% ",? 1 #include <stdio.h> 2 int main(void) 3 { 4 printf("hello CY=n"); 5 return 0; ( ) (1), (2) (1) (2) ) ) / _ / ( / < L/ / 12

15 I ( ) ( ) ( ) A B C D E F G H I J K L M N O P Q R S T U V W X Y Z a b c d e f g h i j k l m n o p q r s t u v w x y z ( 31 ) for data, DATA, Data 4.1. kadai 0510kadai kadai0510 kadai-0510 FOR fime_name FileName ( ) (- ) ( ) ( ) ( ) md MaxData MinData MonthData 4.2 C auto double int struct break else long switch case enum register typedef char extern return union const float short unsigned continue for signed void default goto sizeof volatile do if static while include stdio.h printf scanf 13

16 #include <stdio.h> 2 int main(void){ 3 int auto; 4 auto=5; 5 printf("auto %d Y=n",auto); 6 return 0; C dt=100; dt 100 (= ) (u, U, l, L, LL) 4.3. a 30 a=30; a=036; a=0x1e; a=30u;! LL(long long) L e E 4.4. a b a= ; a= e+02; b= ; b=1.23e-04;! c=100f c=100.0f

17 4.3.3 ( A ) A A 4.5. (1) (2) int c; c= A ; // (1) c=65; // (2) #include <stdio.h> 2 void main(void){ 3 char c; 4 int n; 5 c= A ; 6 n=5; 7 printf("%c %d %c Y=n",c,n,c+n); 8 A 5 F! C a="moji" 8 char txt10]="hello"; // txt "Hello" strcpy(txt, "Hello"); // txt "Hello" printf() Y=n Y= n ( ) Y=n ( ), Y=t ( ), Y=xhh (16 ) a=0x32 a= Y=x

18 4.7. (1) printf("abcy=tklmy=nnopy=nsy=tty=tuy=n"); printf("y=tmnoy=n"); printf("123456y=t7890y=n"); printf(" y=t890y=n"); printf(" y=t90y=n"); abc klm nop s t u mno (2) 16 printf("%dy=n", Y=x30 ); (%d) if(i<=3286){ 3286 if(i<=maxdata){ (main() ) #define MaxData 3286 ( ; ) MaxData

19 max 1 #include <stdio.h> 2 #define max 10 3 int main(void){ 4 int i, sum=0, pro=1, sum2=0; 5 6 for(i=1;i<=max;i++) 7 sum+=i; 8 9 for(i=1;i<=max;i++) 10 pro*=i; for(i=1;i<=max;i++) 13 sum2+=i*i; printf("1 %d,, Y=n",max); 16 printf("%d, %d, %dy=n",sum,pro,sum2); 17 printf(" Y=n"); 18 return 0; ,, 55, , max 10 max (max) (6,7 ) (9,10 ) (12,13 ) #define main() 17

20 #include <stdio.h> 2 #define wa(a,b) ((a)+(b)) 3 #define pri(dt) printf("%dy=n",dt) 4 5 int main(void){ 6 int c; 7 c=wa(10,20); 8 pri(c); 9 return 0; const const const int dt=100; dt 100 // 4.4 printf II 2.2 printf printf(, ); : abc, 123,,, Y=t, Y=n : %d %s %+ ] 18

21 ! %o 8 %d 10 %x 16 ( ) %X 16 ( ) %ld long 10 %f %e ( ) %E ( ) %c %s %p o d a=1;b=2;c=3; printf(" %d %d %d Y=n",a,b,c); % #include<stdio.h> void main(void){ int a=2,b=13,c=321,d=21; printf("a=%4d,y=n",a); printf("b=%4d,y=n",b); printf("c=%4d,y=n",c); printf("c=%04d,y=n",d); 19

22 a= 2, b= 13, c= 321, d=0021, %4d %04d = 4 10 %d 10 %8d %08d %-8d 8 10 %f %10.2f (, 1 ) #include<stdio.h> int main(void){ int a=20; double da= ; printf("a=%8d,y=na=%08d,y=na=%-8d,y=n",a,a,a); printf("da=%fy=n",da); printf("da=%10.4fy=n",da); printf("da=%10.4fy=n",da*(-1)); return 0; a= 20, a= , a=20, da= da= da= (a ) 8 3 (da ) ( )

23 I 5 II 5.1 II 5.1. (1) #include<stdio.h> int main(void){ int a, c; double b; a=123; b= ; c=66; printf(" Y=n",a,a,a); printf(" Y=n",b,b,b); printf("%c,%c,%cy=n", ); return 0; 123,173,7b , e+02, E+02 A,B,C (2) #include<stdio.h> int main(void){ int a; char c; c= G ; a=5; (i) (ii) c= P ; a=3; return 0; G 5 L G g P 3 S P p (i) (ii) 21

24 5.2. ( ) ( ) 3 / / / / 4 ( ) #include<stdio.h> int main(void){ int y=2017; int m1, d1, prec1; int m2, d2, prec2; int m3, d3, prec3; double high1, low1; double high2, low2; double high3, low3; m1=1; d1 = 15; prec1=0; high1=5.12; low1=-3.24; m2=8; d2 = 23; prec2=30; high2=36.33; low2=27.87; m3=9; d3 = 30; prec3=10; high3=26.00; low3=14.00; printf(" Y=n"); return 0; , / / 2017/01/ % 2017/08/ % 2017/09/ % 22

25 I C int a; double b; char c; a, b, c 6.2 C! char unsigned char (signed) int unsigned (int) short (int) unsigned short (int) long (int) unsigned long (int) float , 6 double ( ) printf("%dy=n", sizeof(char)); printf("%dy=n", sizeof(int)); C char ( )

26 6.3 int a; a 4 (a 4 ) int a; 1 4 a a 1 8 ( ) int int (4 ) unsigned int int

27 6.4 C,,,,,,, sizeof, 6.1. int a=10,b=3; printf("a+b=%dy=n",a+b); printf("a-b=%dy=n",a-b); printf("a*b=%dy=n",a*b); printf("a/b=%dy=n",a/b); printf("a%%b=%dy=n",a%b); + a+b a b - a-b a b * a*b a b / a/b a b % a%b a b a+b=13 a-b=7 a*b=30 a/b=3 a%b=1 2 & AND a&b a b OR a b a b ^ OR a^b a b >> a>>2 a 2 << a<<3 a 3 ~ ~a a 25

28 a=0,b=1 a&b=0,a b=1 a=3,b=5 a&b=1,a b=7,a^b=6 a=3, b=5 b a &b 0 1 a b a b 0 1 a b a b 0 1 a a = , a&b = b = , a b = a^b = a>>1; a<<2; a 2 a 4 a=11 a = , a>>1 = , a<<2 = = = = a=b a b a a=3 3=a (BCpad ) int idt; 2 double ddt; 3 idt=2.7182; //idt 2 4 ddt=11.5; //ddt idt=ddt; //idt 11 6 ddt=idt; //ddt idt=(int)ddt; ddt int ( ) 26

29 ++ a++ a 1 -- a-- a a a a a 1 1) a++, ++a a=a+1 2) c=a++; c=a; a++; 3) c=++a; ++a; c=a; 6.3. int a=10,b,c,d,e; b=++a; c=a++; d=--a; e=a--; printf("a=%d, b=%d, c=%d, d=%d, e=%dy=n",a,b,c,d,e); a=10, b=11, c=11, d=11, e= , -- ++, -- *, /, % +, - >>, << = 6.4. int a,b,c; b=3;c=5; a=b+++c; printf("%d,%d,%dy=n",a,b,c);,8, 4, 5 ( ) 27

30 #include<stdio.h> void main(void){ int a,b; a=10; printf("(1)=%d,(2)=%dy=n",a++,++a); printf("(3)=%dy=n",a); printf("(4)=%d,(5)=%dy=n",++a,a++); printf("(6)=%dy=n",a); a=10;b=10; printf("(7)=%d,(8)=%dy=n",a++,++b); printf("(9)=%d,(10)=%dy=n",a,b); printf("(11)=%d,(12)=%dy=n",++a,b++); printf("(13)=%d,(14)=%dy=n",a,b); (1)=11,(2)=11 (3)=12 (4)=14,(5)=12 (6)=14 (7)=10,(8)=11 (9)=11,(10)=11 (11)=12,(12)=11 (13)=12,(14)= #include<stdio.h> void main(void){ int s; double a,b; s= ; a= ; b= ; printf("(1)=%f,(2)=%fy=n",a+b,a-b); printf("(3)=%e,(4)=%ey=n",a*b,a/b); printf("(5)=%10.4f,(6)=%8.3fy=n",a*b,a/b); printf("(7)=%d,(8)=%dy=n",s,s*s*s); printf("(9)=%f,(10)=%fy=n",4/3*3.14,3.14*4/3); (1)= ,(2)= (3)= e+05,(4)= e+07 (5)= ,(6)= (7)= ,(8)= (9)= ,(10)=

31 I 7 III 7.1 III a,b a,b #include<stdio.h> void main(void){ int a,b; a=10;b=4; 2*a+b=24 a-3*b=-2 a*b/b=10 b/a*a=0 a%b%a= a1 a5 a1 a5 #include<stdio.h> void main(void){ int a1, a2, a3, a4, a5; double ave, vari; a1=4; a2=-3; a3=5; a4=12; a5=-2; 5 4, -3, 5, 12,

32 a,b a b a,b (*********** ) 2 30 *********** *********** a 3, a a a 12,321, a 2 8 a a (double ) d d d

33 I 8 C ( ) getchar(), gets(), scanf() ( ) putchar(), puts(), printf() getchar(), putchar() getchar() #include<stdio.h> 2 void main(void){ //void main return 0; 3 int ch; // char ch; 4 ch = getchar(); 5 putchar(ch); 6 putchar( Y=n ); 7 1 a a 2 putchar(ch); abc a putchar(ch); 8.2. getchar() #include<stdio.h> 2 void main(void){ 3 int ch; 4 ch = getchar(); 5 putchar(ch); 6 putchar(ch); 7 a aa 5 6 putchar(ch); 31

34 8.2 (1 ) 1 gets(), puts() char ch100]; 1 (char ) ch] ch0] ch1] ch2] ch98] ch99] 1 char ch100]="abc"; ch] a b c 0? ch0] ch1] ch2] ch3] ch4] ( ) 0 (ch3] 0 ) #include<stdio.h> 2 void main(void){ 3 char ch100]="abcdefg"; 4 5 printf("%sy=n",ch); 6 ch3]=0; 7 printf("%sy=n",ch); 8 ch3]= D ; 9 printf("%sy=n",ch); 10 abcdefg abc abcdefg 0 Y=0! ( ) 3 3 char ch100]; 4 ch100]="abcdefg"; 5 32

35 8.4. gets() #include<stdio.h> 2 int main(void){ 3 char ch100]; 4 gets(ch); 5 puts(ch); 6 puts(ch); 7 return 0; 8 abc abc abc (4 ) 5 puts(ch); 6 puts(ch);.( ) puts() puts("") %c %s 3 char ch100]="abcdefg"; 4 printf("%c Y=n",ch); // NG 5 printf("%s Y=n",ch); // OK 6 printf("%c Y=n",ch1]); // OK 7 printf("%s Y=n",ch1]); // NG %c 1 %s gets() #include<stdio.h> 2 int main(void){ 3 char ch100]; 4 gets(ch); 5 printf("%sy=n",ch); 6 printf("%cy=n",ch2]); 7 return 0; 8 abc abc c 5 printf(); 6 printf(); 33

36 8.3 scanf() scanf() %d (int ) %lf (double ) %s (char ) %s ( ) 8.6. scanf() 1 #include<stdio.h> 2 void main(void){ 3 int n; 4 double d; 5 scanf("%d",&n); // n & 6 printf("%dy=n",n); 7 scanf("%lf",&d); //scanf double %lf 8 printf("%fy=n",d); 9 32 (5 ) (7 ) scanf() 1 #include<stdio.h> 2 void main(void){ 3 char ch100]; 4 scanf("%s",ch); // & (&ch ) 5 printf("%sy=n",ch); 6 abc abc (4 ) 5 printf();! scanf() printf() scanf("n %d",&n); printf("n "); scanf("%d",&n); 34

37 scanf() ( fgets, sscanf) 8.4 scanf() scanf() #include <stdio.h> 2 int main(void){ 3 int a, b; 4 char ch; 5 printf(" a="); 6 scanf("%d",&a); 7 printf(" ="); 8 scanf("%c",&ch); 9 printf(" b="); 10 scanf("%d",&b); 11 return 0; 12 a=12345 = b= , 6, 7, 8 6 scanf() (Y=n) ch %c 1 8 scanf(" %c",&ch); scanf("%c %c %c",&a,&b,&c); 8.5 stdlib.h rand() rand() 0 RAND_MAX(32767) 35

38 8.9. (1) a 1 #include <stdio.h> 2 #include<stdlib.h> 3 int main(void){ 4 int a; 5 a=rand(); 6 return 0; 7 (2) double b; 5 b=rand()/(rand_max+1.0); (3) a=(int)(rand()/(rand_max+1.0)*6)+1; rand() srand() rand() srand() seed rand() seed seed #include <stdio.h> #include <time.h> #include <stdlib.h> #include <windows.h> //Sleep int main(void){ srand(10); printf("%d,%d,%d,%dy=n",rand(),rand(),rand(),rand()); srand(10); printf("%d,%d,%d,%dy=n",rand(),rand(),rand(),rand()); srand((unsigned)time(null)); printf("%d,%d,%d,%dy=n",rand(),rand(),rand(),rand()); Sleep(1000); // 1000 srand((unsigned)time(null)); printf("%d,%d,%d,%dy=n",rand(),rand(),rand(),rand()); return 0; 8444,10368,10345, ,10368,10345, ,19254,31547, ,9362,9631,

39 I 9 IV 9.1 IV 9.1., : s16m999 : m : y s16m999my@ous.jp 9.2. a 5 f y 5 d : 5 : y y 5 d 9.3. (double ) seed srand() ( seed 13) 10 92, 30, 41, 22, 55, 37, 10, 75, 94, gs6v7 gs6v7 7v6Sg 37

40 9.6. (8%) 10% (n) 2 n a, b a 178 b , 94, 14952, 2, a 3, a (7 9 ) a 163,545, a (x1,x2,x3)=( 12.40, 10.34, -3.00) (y1,y2,y3)=( 81.34, , 27.90) (x,y)= ( ) ( ) (n) n qwertyuiop 5 qwertyuiop 5 t 38

41 I ( ) (if for while ) ( ) a<1 b>=12 a==b a!=b < a<b a b <= a<=b a b > a>b a b >= a>=b a b == a==b a b!= a!=b a b ( ) if(a<1) for(;b>=12;) if(a==b) while(a!=b) (true) (false) 1 0 : a==10 : a 10 : a

42 #include<stdio.h> void main(){ int a; a=0; printf("%dy=n",a==5); a=5; printf("%dy=n",a==5); (a>=3 && a<10) (a!=b b>5) (!(a<=b)) && (AND) a&&b a b (OR) a b a b! (NOT )!a a // (a 3 a < 10 a ) // (a b, 5 < b ) // (a > b) 10.2 if if ( 1, 2) { if( ) ; if( ) 1 else 2 ; 1 2 if if-else 40

43 10.5. if 1 1) if(a>10) printf("a 10 Y=n"); 2) if(a>10) printf("a 10 Y=n"); else printf("a 10 Y=n"); 3) if(a>10 && a%2==0){ printf("a 10 Y=n"); printf(" a Y=n"); if 2 scanf("%d",&a); if(a) printf("a 0 Y=n"); a a 0! if ( ) if 3 a=0; if(a==1) printf("a 1 Y=n"); printf("a 0 Y=n"); a if 4 ( { ) a=0; if(a==1){ printf("a 1 Y=n"); printf("a 0 Y=n"); 2 printf! 41

44 if else else if if( A){ 1; else if( B){ 2; else if( C){ 3; else{ 4; A 1 B 2 C if 5 1) if(a>10) printf("a 10 Y=n"); else if(a%2==0) printf("a 10 Y=n"); else printf("a 10 Y=n"); 2) if(b%4==0) printf("b 4 Y=n"); else if(b%4==1) printf("b 4 1 Y=n"); else if(b%4==2) printf("b 4 2 Y=n"); else printf("b 4 3 Y=n"); if? : a?b:c a b c ( N ) (N%2 == 0)? even++ : odd++; 42

45 C a=a+3; b=b*c; += a+=b a b a (a=a+b ) -= a-=b a b a (a=a-b ) *= a*=b a b a (a=a*b ) /= a/=b a b a (a=a/b ) %= a%=b a b a (a=a%b ) >>= a>>=b a b a <<= a<<=b a b a &= a&=b a b a = a =b a b a ^= a^=b a b a = = a+=3; b*=c; #include<stdio.h> void main(){ int a=0; a+=10; printf("%dy=n",a); a++; printf("%dy=n",a); a-=3; printf("%dy=n",a); a<<=3; printf("%dy=n",a);

46 10.3 switch if 2 switch switch( A){ case 1: 1 break; case 2: 2 break; case 3: 3 break; default: n A case 1 case 2 case 3 default n A ( switch(a) switch(i+5) ) 1, 2, 3 A A 1, 2, 3 A 1, 2, 3 default! case 1, case 2, case 3, default ( : ) scanf("%d", &n); switch(n){ case 2: printf(" 2 Y=n); break; case 3: printf(" 3 Y=n); break; case 6: printf(" 6 Y=n); break; default: printf(" 2,3,6 Y=n); 44

47 double n; switch(n){ case 1.5: printf(" 1.5 Y=n); case break break case switch( A){ case 1: 1 case 2: 2 break; case 3: 3 default: 4 A case 1 case 2 case 3 default A A case scanf("%d", &n); switch(n){ case 2: case 3: case 5: case 7: printf(" 10 Y=n); break; default: printf(" 10 Y=n); n 2, 3, 5, 7 case 7: n 2, 3, 5, 7 default: 45

48 I 11 V 11.1 V (y) y ( ) (i) 4 (ii) 100 (iii) ag8hy Ag8Hy ( ) a op b op +( ), -( ), *( ), /( ), %( ) switch ] 1 (a=): 26 (+,-,*,/,%) 1 : % 1 (b=): 4 26 % 4 2 ] 1 (a=): 6 (+,-,*,/,%) 1 : $ 1 (b=): 8 46

49 I for for for( 1 ; 2 ; 3 ) ; for (1) 1 (2) 2 (4) (3) 3 (2) (4) for 1, 2, for 1) for(i=1;i<=10;i++) 2) for(i=1;i<10;j+=2) 3) for(i=1;(i<10&&j<5);i++) 4) for(;i!=0;) n ( ) ( { ) for(i=1;i<=3;i++){ printf(" Y=n"); ( { ) for(i=1;i<=3;i++) printf("%d Y=n",i);

50 ! for if 1 { pow=1; for(i=1;i<=5;i++){ pow*=2; printf("2 %d %d Y=n",i,pow); (??) pow=1; for(i=1;i<=5;i++) pow*=2; printf("2 %d %d Y=n",i,pow); ( 3) i++, ++i, i+=1, i=i+1 1 i--, i=i-1, i*=2, i/=2 1 2, 1, 2 ( 2) i<10 i<=10 i 10 i for (i 11 for ) 48

51 ) (i 100 sum 1000 for ) sum=0; for(i=1;(i<=100)&&(sum<1000);i++) sum+=i; ( for ) sum=0; for(i=1;!(sum<0);i++) sum+=i; for for ( ) for 2 ( ) 1 #include<stdio.h> 2 int main(void){ 3 int i,j; 4 printf(" Y=n"); 5 printf(" y=n"); 6 for(i=1; i<=9; i++){ 7 printf("%d ",i); 8 for(j=1;j<=9; j++) 9 printf("%2d ",i*j); 10 printf("y=n"); return 0;

52 1 for (7 12 ) i 2 for (9,10 ) j i break break for break 1 #include<stdio.h> 2 void main(void){ 3 int sum=0; 4 int n; 5 for(;;) 6 { 7 scanf(" %d",&n); 8 if (n==0)break; 9 sum+=n; printf(" %d Y=n",sum); // for 0 break if 50

53 12.3 continue break switch for continue for for continue if 1 #include<stdio.h> 2 void main(){ 3 int i; 4 for(i=1;i<=30;i++){ 5 6 if(i%2!=0 i%3!=0) continue; 7 printf("%2d 6 Y=n",i); 8 9 f1 f2 A f3 6 i 2 3 for for 3 5 continue switch continue if 13 switch(i%2){ 14 case 0: 15 printf("i "); 16 if (i%4==0) continue; 17 printf(" 4 0 "); 17 i 2, 6 ( continue break ) 12.4 while while for while( ) ; for while for ( ) while while for 2 while(i<=10){ for(;i<=10;){ 51

54 for(i=1;i<=10;i++){ ; while i=1; while(i<=10){ ; i++; while 1) while(i<=1000) 2) while(i!=0) 3) while(i>=j) 4) while(1) //break! while do-while do-while while do while( ); while do-while do-while 1! while ; g #include<stdio.h> void main(void){ int i=0; char m50]="abcdefghijk"; do { printf("%c",mi]); while(mi++]!= g ); 52

55 I 13 VI 13.1 VI , ( ) 1. a 5 f y 5 d : math : 15 "bpiw" : qwer : 12 "ciqd" :.fin ( ) , 22, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1, 53

56 : 14 2 : : ab1 Ab1 : a1fg4rkju90 A1FG4rKJU90 : , -4, 0, 3, -4, 20,-14, 15, -6, , : 500 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 54

57 I ( ) int a10]; double b10]; ] int f10]; f0]=1;f1]=1;f2]=2;f3]=3; int a10]20]; a0]0] a0]1] a0]2]... a0]19] a1]0] a1]1] a1]2]... a1]19] a9]0] a9]1] a9]2]... a9]19] a0]0],a0]1],a1]0],a1]1] det=a0]0]*a1]1]-a1]0]*a0]1]; printf(" %f Y=n", det); int data100]; int i; for(i=0;i<10;i++){ scanf(" %d",&datai]);! 2 temp=dataj]; dataj]=datai]; datai]=temp; dataj]=datai]; datai]=dataj]; 55

58 14.2 (10,11 ) 6 int d3]={1,2,3; 7 int e2]3]={{1,2,3,{4,5,6; 8 char f]={ A, B, C ; 9 char g10]="abcdef"; 10 int h3]={0,1,2,3; // 11 char i3]="abcde"; // ( ) bcpad #include<stdio.h> int main(void){ int i; int data10]={1,2,5,-3,2,6,-4,3,-6,2; for (i=0; i<10; i++){ printf("data%d] = %dy=n", i, datai]); return 0; #include<stdio.h> void main(){ int data10]={1,2,5,-3,2,6,-4,3,-6,2; int i,temp; for(i=0;i<10;i++) printf("%2d,",datai]); printf("y=n"); i=0; while(i<9){ i++; if(datai-1]<datai]){ temp=datai-1]; datai-1]=datai]; datai]=temp; i=0; for(i=0;i<10;i++) printf("%2d,",datai]); printf("y=n"); 1, 2, 5,-3, 2, 6,-4, 3,-6, 2, 6, 5, 3, 2, 2, 2, 1,-3,-4,-6, 56

59 14.3 C #include<string.h> strcpy(ss, st) strcat(ss, st) strcmp(st1, st2) strlen(st) strncpy(ss, st, n) strncat(ss, st, n) strcmp(st1, st2, n) ss st ss st st1 st2 st1 > st2 st1 < st2 st1=st2 0 ss st n ss st n st1 st2 n strcmp(ss, st) 14.7 ( ) strcpy(ss,st) strcat(ss,st) strcmp(st1,st2) strlen(st) #include<stdio.h> 2 #include<string.h> 3 void main(void){ 4 char a]="abc"; 5 char b]="def"; 6 printf(" Y="%sY=" %d Y=n", a, strlen(a)); 7 strcpy(a,b); 8 printf(" Y="%sY=" %d Y=n", a, strlen(a)); 9 strcat(a,b); 10 printf(" Y="%sY=" %d Y=n", a, strlen(a)); 11 "abc" 3 "def" 3 "defdef" 6 57

60 14.7. strcmp ( ) 1 #include<stdio.h> 2 #include<string.h> 3 int main(void){ 4 printf("1) %dy=n", strcmp("abc","abc")); 5 printf("2) %dy=n", strcmp("abc","abd")); 6 printf("3) %dy=n", strcmp("abc","aaaa")); 7 printf("4) %dy=n", strcmp("abc","ab")); 8 printf("5) %dy=n", strcmp("ab","cc")); 9 printf("6) %dy=n", strcmp("ab","ab")); 10 return 0; 11 1) 0 2) -1 3) 1 4) 67 5) -2 6) -32 ( ) A B C D E F... Z a b c d e... z ) 2 strcmp() 0 2) C D -1 4) AB C C 67 6) A a -32 strncpy(ss,st+k,n); ss st k (k + 1 ) n strncpy(ss,st+3,5); st 3 (0,1,2,3 4 ) 5 ss a] "abcdefghijklmn" strncpy(b,a+3,5); b] "defgh" 58

61 I 15 VII (.) 20 b38khur 7 GH3AGa-2435R 12.bye : 2000 : 3 : (2 10) (1) (2 10) : (2) (2 50) : : AthLb+h430gaE153g*ok-Ovm AabEgghhkLmOotv+*- 59

62 a1fg4rkju90 kju90a1fg4r (1): Uchida (2): Uchinashi Uchida Uchinashi 5 d n (1) ( ) (20 ) (1) seed srand() (2) (1) (2) (1) (2) ( ) : 3 3, 10, 5, 16, 8, 4, 2, 1,

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