int X;void A(){X=2;}main(){X++;++X;printf("%d\n",X);A();X++;printf("%d\n",X);}输出结果为:____
fun(int a, int b){return(a
int x;void plusone(){x++;}main(){x=1;plusone();plusone();printf("x=%d\n",x);}输出结果为:______
int f(){int sum=0;static int x=1;return sum+=x++;}main(){int i;for(i=1;i<=3;i++)printf("%d",f());}输出结果为:_____