no matching symbolic information found

#include<iostream>using namespace std;void sphere();void spx();int main(){//sphere();spx();return 0;}void sphere(){double radius;cout<<"Please input radius:";cin>>radius;if (radius<0) return;cout<<"The result is "<<radius*radius*3.14*4<<"/n";}void spx(){for (int x=1;x<=10;++x){for (int y=1 ;y<=x;++y){cout<<"*";}cout<<"/n";}}

 

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Loaded 'ntdll.dll', no matching symbolic information found.
Loaded 'C:/WINDOWS/system32/kernel32.dll', no matching symbolic information found.
Loaded 'C:/WINDOWS/system32/shimeng.dll', no matching symbolic information found.
The thread 0xDD4 has exited with code 0 (0x0).
The program 'D:/960174/MY DOCUMENTS/VC/ex/Debug/ex.exe' has exited with code 0 (0x0).

录入完成后,按 F5 运行程序,可是却显示不出结果,

 

程序本身并没有错,为什么会报错呢,

 

经过分析:原来是程序没有重新编译所致,按 F7重新编译后,F5 可以正常执行.