main() { int a1,a2,x; a1=10;a2=20;x=a1*a2; printf("a1=%d,a2+

main(){
int a1,a2,x; //定义三个参数
a1 = 10; //以下三行为三个参数赋值
a2 = 20;
x = a1 * a2;
printf("a1 = %d,a2 = %d\n",a1,a2); //输出a1 = ,a2 =
printf("x = %d\n",x); //输出x =
}