1.1
#include<stdio.h>
int main() { printf(" o \n"); printf("<H>\n"); printf("I I\n"); printf(" o \n"); printf("<H>\n"); printf("I I\n"); return 0; }
1.2
#include<stdio.h> int main() { printf(" o o\n"); printf("<H> <H>\n"); printf("I I I I\n"); return 0; }
2.1
#include <stdio.h> int main() { int n, sum; scanf("%d",&n); sum = n*(n+1)/2; printf("sum = %d\n", sum); return 0; }
写法1,2满足要求。3,4有误差。
3.1
#include <stdio.h> int main() { int a, b, t; a = 3; b = 4; printf("a= %d, b=%d\n", a, b); t = a; a = b; b = t; printf("a = %d,b = %d\n", a, b); return 0;
}
功能:将a,b输出值互换
4.1
#include <stdio.h> int main() { int x, t, m; x = 123; printf("x = %d\n", x); t = 0; m = x % 10; t = t * 10 + m; x = x / 10; m = x % 10; t = t * 10 + m; x = x / 10; m = x % 10; t = t * 10 + m; x = x / 10; printf("t = %d\n", t); return 0; }
结论:使abc变成cba
5.1
#include <stdio.h> int main() { float a, b, c; scanf("%f%f%f", &a, &b, &c); if (a + b >c ) printf("能构成三角形\n"); else printf("不能构成三角形\n"); return 0; }
6.1
#include <stdio.h> int main() { int year; year = 1000000000/60/60/24/365; printf("10亿秒约等于%d年\n", year); return 0; }
7.1
#include <stdio.h> #include <stdlib.h> #include <time.h> int main() { int n; srand(time(0)); n = rand() % 41 + 60; printf("n = %d\n", n); return 0; }
随机数不一样
8.1
#include <stdio.h> int main() { char ans1, ans2; printf("每次上课前认真预习、课后认真复习了没有?(输入y或者Y表示有,输入n或者N表示没有) : "); ans1 = getchar(); getchar(); printf("\n动手敲代码实践了吗?(输入y或者Y表示有,输入n或者N表示没有) : "); ans2 = getchar(); if ((ans1 == 'Y' or ans1 == 'y') && (ans2 == 'y' or ans2 == 'Y')) printf("\n罗马不是一天建成的,请继续保持哦:)\n"); else printf("\n罗马不是一天毁灭的,我们来建设吧\n"); }
标签:10,main,return,int,实验,printf,include From: https://www.cnblogs.com/ry202283300666/p/17196182.html