Question

I’m trying to create a function that will replace 0’s, 1’s, or 2’s with spaces in a string. I’m going about it by iterating through the string and comparing each individual character.

My function will work if I compare str_in[i] == ‘0’, but if I add the or statement it returns nothing.

Snippet:

string omit_num( string ) {
    int i ;

    str_len = str_in.length();
    str_out = "" ; 

    for( i = 0 ; i < str_len ; i ++ ){
         cout << str_in[i] << endl; 
         if ( str_in[i] == '0' || '1' || '2') 
            app = " " ;
         else
             app = str_in[i];
         str_out.append(app) ; 
    }
    return str_out; 

}

Answer 1

You need

if ( str_in[i] == '0' ||  str_in[i] =='1' ||  str_in[i] =='2')