实验2
实验一
程序源码:
#include<stdio.h> #include<stdlib.h> #include<time.h> #define N 5 #define R1 586 #define R2 701 int main() { int number; int i; srand (time(0)); for(i = 0; i < N; ++i) { number = rand() % ( R2 - R1 + 1) + R1; printf("20228330%04d\n", number); } system("pause"); return 0; }
程序运行:
实验2
程序源码:
#include <stdio.h> #include<stdlib.h> int main() { double x, y; char c1, c2, c3; int a1, a2, a3; scanf("%d%d%d", &a1, &a2, &a3); /*没加&符号*/ printf("a1 = %d, a2 = %d, a3 = %d\n", a1, a2, a3); getchar(); scanf("%c%c%c", &c1, &c2, &c3); getchar(); printf("c1 = %c, c2 = %c, c3 = %c\n", c1, c2, c3); scanf("%lf,%lf", &x, &y); /*应该用lf 而不是f*/ printf("x = %lf, y = %lf\n", x, y); system("pause"); return 0; }
程序运行:
task3
程序源码:
#include <stdio.h> #include <stdlib.h> #include <math.h> int main() { double x, ans; while(scanf("%lf", &x) != EOF) { ans = pow(x, 356); printf("%.2f的365次方:%.2f\n", x, ans); printf("\n"); } system("paise"); return 0; }
程序运行:
程序源码:
#include <stdio.h> #include <math.h> #include <stdlib.h> int main() { double x, ans; while(scanf("%lf", &x) != EOF) { ans = 9.0 / 5 * x + 32; printf("摄氏度%.2f时,华氏度%.2f\n", x, ans); printf("\n"); } system("pause"); return 0; }
程序运行:
task4
程序源码:
#include<stdio.h> #include<stdlib.h> int main() { char c; while(scanf("%c", &c) != EOF) { getchar(); if(c == 'r') printf("stop!\n"); else if(c == 'g') printf("go go go\n"); else if(c == 'y') printf("wait a minute\n"); else printf("something must be wrong...\n"); } system("pause"); return 0; }
程序运行:
task5
程序源码:
#include<stdio.h> #include<stdlib.h> #include<math.h> #include<time.h> int main() { srand(time(0)); int d = rand() % 30 + 1; printf("猜猜2023年4月哪一天会是你的lucky day\n\n"); printf("开始喽,你有三次机会,猜吧(1~30):"); int x; scanf("%d", &x); printf("\n"); if(x == d) { printf("哇,猜中了:~)"); } else { if(x < d) { printf("你的日期猜早了,你的lucky day还没到呢\n\n"); } if(x > d) { printf("你的日期猜晚了,你的lucky day已经过了\n\n"); } printf("再猜(1~30):"); scanf("%d", &x); printf("\n"); if(x == d) { printf("哇,猜中了:~)"); } else { if(x < d) { printf("你的日期猜早了,你的lucky day还没到呢\n\n"); } if(x > d) { printf("你的日期猜晚了,你的lucky day已经过了\n\n"); } printf("再猜(1~30):"); scanf("%d", &x); printf("\n"); if(x == d) { printf("哇,猜中了:~)"); } else { if(x < d) { printf("你的日期猜早了,你的lucky day还没到呢\n\n"); } if(x > d) { printf("你的日期猜晚了,你的lucky day已经过了\n\n"); } printf("次数用完了,偷偷告诉你:4月,你的lucky day是%d号", d); } } } system("pause"); return 0; }
程序运行:
task6
程序源码:
#include<stdio.h> #include<stdlib.h> int main() { int i, j; for(i = 1;i <= 9; i++) { for(j = 1;j <= i; j++) { printf("%d*%d =%3d ", j, i, j * i); } printf("\n"); } system("pause"); return 0; }
程序运行:
task7:
程序源码:
#include<stdio.h> #include<stdlib.h> int main() { int n; printf("input n:"); scanf("%d", &n); for(int i = 1;i <= n; i++) { for(int k = 1;k <= 3; k++) { for(int j = 1;j <= i - 1; j++) { printf(" "); } for(int j = 1;j <= 2 * (n - i) + 1; j++) { if(k == 1) printf(" O "); if(k == 2) printf("<H> "); if(k == 3) printf("I I "); } printf("\n"); } } system("pause"); return 0; }
程序运行: