Question

I am reading a char array newpath that contains C:\\Program Files\\test software\\app . How to substitute the space to underscore character?

char newPath2[MAX_PATH];
int newCount2 = 0;

for(int i=0; i < strlen(newPath); i++)
 {
 if(newPath[i] == ' ')
    {
     newPath2[i] = '_';         
    }
    newPath2[newCount2]=0;
 }

Answer 1

newCount2 is always 0, I think you need to increment this counter too. If not Im not sure what you are doing with this statement newPath2[newCount2]=0;

I think you want this:

for(int i=0; i < strlen(newPath); i++)
 {
 if(newPath[i] == ' ')
    {
     newPath2[i] = '_';         
    }else{
     newPath2[i]=newPath[i];
    }
 }