2.1 programming09 programming / 2 3 / 4 5 #include <stdio.h> 6 7 int sum(int x

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1 1 C [1] 2 (,,...) : int f(float a, double b); 1 1 ( int ) ( ) x,y 29 return ( ); 18 x,y sum return z ( )

2 2.1 programming09 programming /******************************** 2 3 ********************************/ 4 5 #include <stdio.h> 6 7 int sum(int x, int y); 8 9 int main(){ 10 int x,y,z; printf(" :"); 13 scanf("%d", &x); printf(" :"); 16 scanf("%d", &y); z=sum(x,y); printf(" %d \n",z); 21 return 0; 22 } int sum(int x, int y){ 25 /* */ 26 int a; a=x+y; 29 return a; 30 } 2.3 func-example.c exfunc > gcc -o exfunc func-example.c 2

3 ( ) ( ) ( ) ( )#include ( 1) 2.2 my-calc #include 2.2 ( 2 ) #include<stdio.h> < > ( ) 1: include :my-cal :my-calc ( ).h.c(c ) include 2.2 ( 3 ) 3

4 2: include 3: include ( ) ( ) (.o) printf scanf ( ) ( ) ( ) ( )= ( )+ ( 4) 3 ( ) #include my-calc.c > gcc -o func-example func-example.c my-calc.c my-calc.c > gcc -c my-calc.c my-calc.o > gcc -o func-example func-example.c my-calc.o ( my-calc.c ( ) ) 4

5 4: ( ) func-example.c my-calc.h my-calc.c 3.2 > gcc -c my-calc.c func-example > gcc -o func-example func-example.c my-calc.o func-example > gcc -o func-example func-example.c my-calc.c [2] 3 (3 ) ( )

6 4.1 bandit.h bandit00.o 4.2 [1] 1 /******************************************************* 2 (3 ) 3 *******************************************************/ 4 5 #include <stdio.h> /* */ 6 #include <stdlib.h> /* */ 7 #include "bandit.h" /* */ 8 9 double armselect3(int first, int second, int third); int main(){ 12 int num_arm, loop, arm_select, selection[3]; 13 double total_reward; init_bandit(); /* */ num_arm = get_arm_num();/* */ 18 printf(" %d \n",num_arm); /* (3 ) */ 21 for(loop=0 ; loop<3 ; loop++){ 22 printf(" [1-%d]:",num_arm); 23 scanf("%d", &arm_select); 24 selection[loop] = arm_select; 25 } /* armselect3 */ 28 total_reward = armselect3(selection[0], selection[1], selection[2]); printf(" :%lf\n",total_reward); return 0; 33 } 6

7 34 35 double armselect3(int first, int second, int third){ 36 int loop; 37 double total; /* 3 */ 40 total = bandit(first); 41 total = total + bandit(second); 42 total = total + bandit(third); return total; 45 } 4.3 gameplay-armselect3.c gameplay-armselect3 > gcc -o gameplay-armselect3 gameplay-armselect3.c bandit00.o armselect3 armselect3.h armselect3.c armselect5, armselect

8 [3] ( ) (double array[10] 10 ) 10 (12 ) num try 5.1 [1] 1 /******************************************************* 2 ( ) 3 *******************************************************/ 4 5 #include <stdio.h> /* */ 6 #include <stdlib.h> /* */ 7 #include "bandit.h" /* */ 8 9 /* num_try (selection[i] i+1 */ 10 double armselect(int selection[], int num_try); 11 /* 12 double armselect(int* selection, int num_try); 13 */ int main(){ 16 int num_arm, loop, arm_select, selection[3]; 17 double total_reward; init_bandit(); /* */ num_arm = get_arm_num();/* */ 22 printf(" %d \n",num_arm); /* (3 ) */ 25 for(loop=0 ; loop<3 ; loop++){ 26 printf(" [1-%d]:",num_arm); 27 scanf("%d", &arm_select); 28 selection[loop] = arm_select; 29 } 8

9 30 31 /* armselect (3 ) */ 32 total_reward = armselect(selection, 3); printf(" :%lf\n",total_reward); return 0; 37 } /* 40 double armselect(int* selection, int num_try){ 41 */ 42 double armselect(int selection[], int num_try){ 43 int loop; 44 double total; /* num_try */ 47 total=0.0; 48 for(loop=0 ; loop<num_try ; loop++){ 49 total = total + bandit(selection[loop]); 50 } return total; 53 } 5.2 gameplay-arrayselect3.c gameplay-arrayselect3 > gcc -o gameplay-arrayselect3 gameplay-arrayselect3.c bandit00.o armselect arrayselect.h arrayselect.c 9

10 (,,...) : int f(float a, double b); armselect3 armselect ( ) pointer pointerarray int* p ( ) /******************************** 2 3 ********************************/ 4 5 #include <stdio.h> 6 #include <stdlib.h> 10

11 7 8 int normal(int input); 9 int pointer(int* p); 10 int pointerarray(int* p); int main(){ 13 /* */ 14 int input; 15 /* */ 16 int *pointer1, *pointer2; 17 /* ( ) */ 18 int *parray; 19 /* */ 20 int array[10]; /* */ 24 input = -1; 25 printf("input = %d\n",input); 26 normal(input); 27 printf("input = %d\n",input); /* */ /* pointer1 input */ 32 pointer1 = &input; 33 *pointer1=-2; 34 printf("*pointer1 = %d\n",*pointer1); 35 pointer(pointer1); 36 printf("*pointer1 = %d\n",*pointer1); /* pointer2 */ 39 pointer2 = malloc(sizeof(int)); 40 *pointer2=-3; 41 printf("*pointer2 = %d\n",*pointer2); 42 pointer(pointer2); 43 printf("*pointer2 = %d\n",*pointer2); /* ( ) */ 46 parray = malloc(sizeof(int)*10); /* 10 */ 47 /* parray[2] parray[3] */ 48 *(parray+2)=-4; /* parray[2] */ 49 parray[3]=-5; /* *(parray+3) */ 11

12 50 51 printf("parray[2]:parray[3]=%d:%d\n",parray[2],parray[3]); 52 pointerarray(parray); 53 printf("parray[2]:parray[3]=%d:%d\n",parray[2],parray[3]); /* */ 56 /* array[2] array[3] */ 57 array[2]=-6; 58 array[3]=-7; printf("array[2]:array[3]=%d:%d\n",array[2],array[3]); 61 pointerarray(array); /* */ 62 printf("array[2]:array[3]=%d:%d\n",array[2],array[3]); free(pointer2); 65 free(parray); 66 return; 67 } int normal(int input){ 70 input = 100; return 0; 73 } int pointer(int* p){ 76 *p = 200; return 0; 79 } int pointerarray(int* p){ 82 p[2] = 300; 83 p[3] = 400; return 0; 86 } 6.2 multioutput-samle.c multioutput-sample > gcc -o multioutput-sample multioutput-sample.c 12

13 selection[3] play 9 num try: selection: reward: (39 ) 1 /******************************************************* 2 ( ) 3 *******************************************************/ 4 5 #include <stdio.h> /* */ 6 #include <stdlib.h> /* */ 7 #include "bandit.h" /* */ 8 9 double play(int num_try, int* selection, double* reward); int main(){ 12 int num_arm, loop, arm_select, selection[3]; 13 double total_reward, reward[3]; init_bandit(); /* */ num_arm = get_arm_num();/* */ 18 printf(" %d \n",num_arm); /* (3 ) */ 21 for(loop=0 ; loop<3 ; loop++){ 22 printf(" [1-%d]:",num_arm); 23 scanf("%d", &arm_select); 24 selection[loop] = arm_select; 25 } total_reward = play(3, selection, reward); 28 13

14 29 /* */ 30 for(loop=0 ; loop<3 ; loop++){ 31 printf("%d : =%lf\n",loop+1,reward[loop]); 32 } 33 printf(" :%lf\n",total_reward); return 0; 36 } double play(int num_try, int* selection, double* reward){ } 7 [1] [2] [3] 14

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C¥×¥í¥°¥é¥ß¥ó¥° ÆþÌç C (3) if else switch AND && OR (NOT)! 1 BMI BMI BMI = 10 4 [kg]) ( [cm]) 2 bmi1.c Input your height[cm]: 173.2 Enter Input your weight[kg]: 60.3 Enter Your BMI is 20.1. 10 4 = 10000.0 1 BMI BMI BMI = 10