abort() 函数定义在 stdlib.h 头文件中。它通过触发 SIGABRT 信号来中止程序执行，并直接从调用位置退出。
void abort(void);
abort() 函数不带任何参数。abort() 不会刷新打开的文件缓冲区，也不会调用我们使用 atexit() 安装的任何清理函数。
abort() 函数不返回任何参数。abort() 函数会覆盖对 SIGABRT 信号的阻塞或忽略。
#include <stdio.h>
#include <stdlib.h>
int main()
{
FILE *p;
printf("Open myfile.txt\n");
p = fopen( "myfile.txt","r" );
if(p == NULL) {
printf("Abort the program\n");
abort();
}
printf("Close myfile.txt\n");
fclose(p);
return(0);
}
输出
Open myfile.txt Abort the program Aborted (core dumped)
#include <stdio.h>
#include <stdlib.h>
int main (){
FILE *p = fopen("mydata.txt","r");
if (p == NULL) {
fprintf(stderr, "Opening file mydata.txt have error in function main()\n");
abort();
}
/* Normal processing continues here. */
fclose(p);
printf("Normal Return\n");
return 0;
}
输出
Opening file mydata.txt have error in function main()
