C语言学习之路【2025-11-06】

[60s程序自动关机]

#include<stdio.h>
#include<string.h>
#include<stdlib.h>

int main()
{
	char input[20] = {0};
	system("shutdown -s -t 60");
again:
	printf("你的电脑将在60s内关机，请输入：我是猪，则不会关机\n");
	scanf("%s", input);
	if(strcmp(input,"我是猪") == 0)
	{
		system("shutdown -a");
	} 
	else
	{
		printf("输入错误，请重新输入\n");
		goto again;
	}
	
	return 0;
} 

---

【交换两个数字】

#include<stdio.h>

void swap(int *x, int *y)
{
	int z = *x;
	*x = *y;
	*y = z;
}


int main()
{
	int a = 0;
	int b = 0;
	scanf("%d %d",&a, &b);
	swap(&a, &b);
	
	printf("%d %d",a, b);
	return 0;
}