program can't recognize a char

Question

I have little problem with compresion of two chars.

for(int i=0; i<initializer.size(); i++)
{
    char letter;
    letter=initializer[stringIter];
    if(letter=='+')
    {
        std::cout<<"+";    
    }
    else if(letter=='-')
    {
        std::cout<<"-";
    }
    else if(letter=='F')
    {
        std::cout<<"F";
    }
    else
    {
        std::cout<<letter<<" UNKNOWN";}
    }
    initializer =F+F-F-F+F
}

and when I'm trying to print the char I have little question mark insted of the real char, and almost every char is UNKNOWN.

shouldn't it be `initializer[i]`? Or add the declaration of `stringIter` — WorldSEnder, Jul 10 '15 at 16:57
Perfect time to learn [how to use a debugger](http://ericlippert.com/2014/03/05/how-to-debug-small-programs/) and step through the code so you can see exactly what's going on. — Captain Obvlious, Jul 10 '15 at 17:04
Where is `stringIter` incremented in the loop? I don't see it declared as a reference to `i`, so how can it be the same? — Thomas Matthews, Jul 10 '15 at 19:20

lispsil · Answer 1 · 2015-07-10T18:00:40.870

0

This way will work:

#include<iostream>
#include<string>
int main(){
std::string initializer = "F+F-F-F+F";
 for(int i=0; i<initializer.size(); i++)
    {

        char letter;
        letter=initializer[i];
        if(letter=='+')
        {            std::cout<<"+";

        }
        else if(letter=='-')
        {            std::cout<<"-";

        }
        else if(letter=='F')
        {            std::cout<<"F";

        }
        else
        {
        std::cout<<letter<<" UNKNOWN";}
        }
}

DEBBUGING shows that he found a \342 \210 \222 char as letter. But why?.. So whats the problem? It is really chars.

edited Jul 10 '15 at 18:00

answered Jul 10 '15 at 17:04

lispsil

383
2
8

Lolz.................................. it's function not in main and initializer is passing to it. I have wrote like this to show its value..... – Menos Jul 10 '15 at 17:18
And so? I have fixed your iterator mistake. If you insert this code into notmain function it will work. – lispsil Jul 10 '15 at 17:23
Watch to this line: letter=initializer[i]; – lispsil Jul 10 '15 at 17:24

score 0 · Accepted Answer · edited May 23 '17 at 11:44

0

I have found : getting errors stray ‘\342’ and ‘\200’ and ‘\214’

and it coused by copy strange characters from web;) So it's works now

edited May 23 '17 at 11:44

Community

1
1

answered Jul 10 '15 at 17:38

Menos

351
2
7

No actually, it doesn't. It only looks like it. Have fun debugging! – user4581301 Jul 10 '15 at 19:25

program can't recognize a char

2 Answers2