下面程序运行时输出结果是________。#includevoid num(){ extern int x, y;int a=15, b=10;x=a-b;y=a+b;}int x, y;int main(){ int a=7, b=5;x=a+b;y=a-b;num();printf("%d,%d ", x, y);return 0;} 结果是 运行时 发布时间:2024-05-10 10:04:01