【单选题】以下程序的正确运行结果是 ( )。 int x,y; main() {int a = 7,b= 5; x = a+b; y = a-b; num( ); printf(“%d,%d\n”,x,y); } int num() {int x,y;int a = 15,b =10; x = a–b; y = a + b; }
【简答题】#include int a,b; void fun() { int x,y,a=15,b=10; x=a-b;y=a+b; } int main() { int a=15,b=7; int x,y; x=a+b;y=a-b; fun(); printf("x=%d,y=%d\n",x,y); return 0; }输出结果是__________