#include<stdio.h>
#include<stdlib.h>
#include<time.h>
void main()
{
    int x,y,z
    srand(time(0));
    x=rand()%100;
    y=rand()%100;
    printf("%d+%d=",x,y);
    scanf("%d",&z);
    if(x+y==z)printf("计算正确!\n");
    else printf("计算错误!\n");
}
报错:
--------------------Configuration: aaa11 - Win32 Debug--------------------
Compiling...
aaa11.cpp
D:\c语言练习上机练习\第20章\第20章\aaa\aaa11.cpp(7) : error C2146: syntax error : missing ';' before identifier 'srand'
执行 cl.exe 时出错.

aaa11.obj - 1 error(s), 0 warning(s)
是什么意思