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1 main

2 void JPcalendar(int x) while(1) Ctrl C void JPcalendar(int x){ if (x > 1988) printf(" %d %d \n", x, x-1988); else if(x > 1925) /* */ else printf(" \n"); int num; while(1){ printf(" "); scanf("%d", &num); JPcalendar(num); return 0; ^C 2

3 void JPcalendar(int x){ if (x > 1989) printf(" %d %d \n", x, x-1988); else if(x == 1989) printf(" %d 1 %d \n", x, x-1925); /* */ else printf(" \n"); /* 2 */ ^C 3

4 int gcd(int n, int r) void reducefrac(int a, int b) int gcd(int n, int r){ /* */ return tmp; void reducefrac(int a, int b){ int na, nb; /* */ if(nb!= 1) printf("%d/%d %d/%d \n", a, b, na, nb); else printf("%d/%d %d \n", a, b, na); int n1, n2, m; printf(" \n"); while(1){ printf(" :"); scanf("%d", &n1); printf(" :"); scanf("%d", &n2); reducefrac(n1, n2); return 0; 4

5 :20 :30 20/30 2/3 :21 :49 21/49 3/7 :25 :75 25/75 1/3 :72 :12 72/12 6 :^C 5

6 5. (Fibonacci) 1, 1, 2, 3, 5, 8, 13, 21, 34, = 2, = 3, = 5, = 8, m void fibonacci(int m)? void fibonacci(int m){ int i, n3; int n1=0; int n2=1; printf("%d\n", n2); for(i=1; i<m; i++){ n3 =?; printf("%d\n", n3); n1 =?; n2 =?; int num; printf(" "); scanf("%d", &num); fibonacci(num); return 0; 6

8 6. 4 na nb main int na, nb; // int gcd(int n, int r){ /* */ void reducefrac(int a, int b){ /* */ int n1, n2; printf(" \n"); while(1){ printf(" :"); scanf("%d", &n1); printf(" :"); scanf("%d", &n2); reducefrac(n1, n2); // if(nb!= 1) printf("%d/%d %d/%d \n", n1, n2, na, nb); else printf("%d/%d %d \n", n1, n2, na); return 0; 8

9 :6 :15 6/15 2/5 :63 :7 63/7 9 :13 :91 13/91 1/7 :39 :91 39/91 3/7 :^C 9

10 7. s t + u v = sv + tu tv void addfrac(int s, int t, int u, int v) 2 n1/n2 n3/n4 p=sv+tu q=tv int p, q; // void addfrac(int s, int t, int u, int v){ /* */ int n1, n2, n3, n4; while(1){ printf(" 1 \n"); printf(" :"); scanf("%d", &n1); printf(" :"); scanf("%d", &n2); printf(" 2 \n"); printf(" :"); scanf("%d", &n3); printf(" :"); scanf("%d", &n4); addfrac(n1, n2, n3, n4); printf("%d/%d+%d/%d=%d/%d\n", n1, n2, n3, n4, p, q); return 0; 10

11 1 :1 :2 2 :2 :3 1/2+2/3=7/6 1 :3 :5 2 :7 :11 3/5+7/11=68/55 1 :1 :6 2 :2 :6 1/6+2/6=18/36 1 :^C 11

12 8. 7 int gcd(int n, int r) void reducefrac(int a, int b) p/q int na, nb; // int gcd(int n, int r){ /* */ void reducefrac(int a, int b){ /* */ void addfrac(int s, int t, int u, int v){ /* */ int n1, n2, n3, n4; while(1){ printf(" 1 \n"); printf(" :"); scanf("%d", &n1); printf(" :"); scanf("%d", &n2); printf(" 2 \n"); printf(" :"); scanf("%d", &n3); printf(" :"); scanf("%d", &n4); addfrac(n1, n2, n3, n4); if(nb!=1) printf("%d/%d+%d/%d=%d/%d\n", n1, n2, n3, n4, na, nb); else printf("%d/%d+%d/%d=%d\n", n1, n2, n3, n4, na); return 0; 12

13 1 :1 :8 2 :3 :8 1/8+3/8=1/2 1 :3 :7 2 :4 :7 3/7+4/7=1 1 :1 :6 2 :1 :2 1/6+1/2=2/3 1 :22 :123 2 :9 :11 22/123+9/11=1349/ :^C 13

C言語7

C言語7 C 言語 7 ポインタアドレスを出力 int a; a=5; printf(" 変数 aの値は %dです n", a); printf(" 変数 aのアドレスは %pです n", &a); 実行結果変数 a の値は 5 です変数 a のアドレスは 0038FAC4 です変数 a の値は 15 です変数 a のアドレスは 0038FAC4 です注アドレスの値は実行環境やプログラムの実行状況により異なります