刚学的。。希望能有人给指点下错误。。谢谢

总是出现2个警告
C:\Program Files\Microsoft Visual Studio\MyProjects\test\test.cpp(6) : warning C4700: local variable 'a' used without having been initialized
C:\Program Files\Microsoft Visual Studio\MyProjects\test\test.cpp(6) : warning C4700: local variable 'b' used without having been initialized

#include <iostream>
using namespace std;
int main()
{
int a, b;
float c;
cout<<"请输入a数值\n";
cin>>a;
cout<<"请输入b数值\n";
cin>>b;
cout<<"下面是贵公司业绩\n";
cout<<"贵公司刘某某的业绩是\t"<<a;
cout<<endl;
cout<<"贵公司齐某某的业绩是\t"<<b;
cout<<endl;
c=(static_cast<float>(a)+b)/2;
cout<<"贵公司的平均业绩是\t"<<c;
cout<<endl;
return 0;
}