c语言 创建一个"1.txt"的文件 请帖出整个源码

#include <stdio.h>

void main(void)
{
FILE *file;
file = fopen("1.txt", "w+");
fclose(file);
}

#include "stdio.h"
main()
{
FILE *fp;
if((fp=fopen("1.txt","w"))==NULL)
exit(0);
/*写文件

*/
fclose(fp);
}