实验2
task1
源代码
#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; }
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结论
1.从R1-R2之间随机生成一个数并赋值到number
2.以系统时间随机生成五个数组
task2
源代码
#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);// printf("a1 = %d, a2 = %d, a3 = %d\n", a1,a2,a3); scanf("%c%c%c", &c1, &c2, &c3); printf("c1 = %c, c2 = %c, c3 = %c\n", c1, c2, c3); scanf("%lf%lf", &x, &y);// printf("x = %f, y = %lf\n",x, y); system("pause"); return 0; }
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task3
源代码
3_1
#include <stdio.h> #include <math.h> int main() { double x, ans; while(scanf("%lf", &x) != EOF) { ans = pow(x, 365); printf("%.2f的365次方: %.2f\n", x, ans); printf("\n"); } return 0; }
3_2
#include <stdio.h> #include <math.h> int main() { double c, f; while(scanf("%lf", &c) != EOF) { f = 9*c/5+32; printf("摄氏度c = %.2f时,华氏度f = %.2f\n", c, f); printf("\n"); } return 0; }
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task4
源代码
#include <stdio.h> int main() { char x; while(scanf("%c", &x) != EOF) { switch(x){ case'y':printf("wait a minutea\n");break; case'g':printf("go go go\n");break; case'r':printf("stop!\n");break; default:printf("something muse be wrong...\n"); } getchar(); } return 0; }
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task5
源代码
#include <stdio.h> #include <stdlib.h> int main() { int x,n,i; x = rand() %(30)+1; printf("猜猜2023年4月哪一天会是你的lucky day\n开始喽,你有三次机会,"); for(i=0;i<3;i++){ printf("猜吧(1-30):"); scanf("%d",&n); if(n==x) {printf("哇,你中了!!!\n");break;} else if(n<x) printf("你猜的时间早了哦\n"); else printf("你猜的时间晚了哦\n"); if(i==2) printf("次数用完啦,偷偷告诉你,4月你的lucky day是%d号\n",x); } system("pause"); return 0; }
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task6
源代码
#include <stdio.h> #include <stdlib.h> int main() { int j,i; for(i=1;i<=9;i++){ for(j=1;j<=i;j++){ printf("%d*%d = %-2d ",j,i,i*j);} printf("\n"); } system("pause"); return 0; }
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task7
源代码
#include<stdio.h> int main() { int n,i,y,v,a=1; scanf("%d",&n); for(i=n;i>=1;i--){ for(v=1;v<a;v++) printf("\t"); for(y=1;y<=(2*i-1);y++){ printf(" O \t"); } printf("\n"); for(v=1;v<a;v++) printf("\t"); for(y=1;y<=(2*i-1);y++){ printf("<H>\t"); } printf("\n"); for(v=1;v<a;v++) printf("\t"); for(y=1;y<=(2*i-1);y++){ printf("I I\t"); } printf("\n"); a++; } return 0; }
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