type convert problem

[bloodwinner]

string strd1 = "9"; int m=atoi(strd); Got the error: error C2664: 'atoi' : cannot convert parameter 1 from 'class std::basic_string,class std::allocator >' to 'const char *' how to change the second line to make it work?

[George L Jackson]

This is the correct way: string strd1 = "9"; int m = atoi(strd1.c_str());

[jocblack]

I have the same problem long time ago. It is a mix mode of string vs char. Here the solution: define string strd1 = "9"; as char strd1 [1]="9"; or CString strd1 ="9";