函数 声明 调用 定义声明--add.h定义--add.c调用--demo.c int Add(int x, int y);//函数声明int main(){ int a = 10; int b = 20; int sum = 0; sum = Add(a, b);//函数调用 printf("%d\n", sum); return 0;}//函数定义int Add(int x, i
判断素数？#define _CRT_SECURE_NO_WARNINGS 1 #include<math.h>int is_prime(int x){ int j = 0; for (j = 2; j<=sqrt(x); j++) { if (x%j == 0) return 0; } return 1;}int main(){ int i = 0;
sum_int Add(int x, int y){ int z = 0; z = x + y; return z;}int main(){ int a = 10; int b = 20; int sum = Add(a, b); printf("%d\n", sum); return 0;}库函数_ strcpy字符串拷贝 strl
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好玩的关机程序#include <stdio.h>#include <stdlib.h>int main(){ char input[10] = { 0 }; system("shutdown -s -t 60"); while (1) { printf("电脑将在1分钟内关机，如果输入：我是猪，就取消关机!\n请输入:>"); scanf("%s
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