fun(int x) {inta=3;a*=x;return a;}main(){int x=2,y=1,n;n=fun(x);n=fun(y...fun(int x) {inta=3;a*=x;return a;}main(){int x=2,y=1,n;n=fun(x);n=fun(y)printf(“

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fun(int x) {inta=3;a*=x;return a;}main(){int x=2,y=1,n;n=fun(x);n=fun(y...
fun(int x) {inta=3;a*=x;return a;}main(){int x=2,y=1,n;n=fun(x);n=fun(y)printf(“%d\n”,n)}

输出:3
n=fun(x)//x=2,fun函数中:a=a*x=3*2=6,return 后,n=6
n=fun(y)//y=1,fun函数中:a=a*x=3*1=3,return 后,n=3