C : compare 2 chars

Question

i wanna to compare two chars , if char_1 == char_2 it must print out 1 else : print 0 but it doesn't ,

just first test is correct and the rest are false and i'll attach an example some test cases and it's output

i have this code

code

#include<stdio.h>
#include<string.h>
#include<ctype.h>


int check_char(char x , char y );
int check_spec_char(char x , char y);

int main ()
{
    int i , x;
    char k , l ;
    for(i = 0 ; i < 5 ; i++)
    {
        scanf("%c %c" , &k, &l );
        x = check_char(k , l);
        printf("%i\n\n", x);
    }
    return 0;
}


int check_spec_char(char x , char y)
{
    if(((x == 'e' || x == 'i' ) && (y == 'e' || y == 'i' )) ||
       (( x == 'p' || x == 'b') && ( y == 'p' || y =='b')))
    {
        return 1;

    } else
    {
        return 0 ;
    }
}


int check_char(char x , char y )
{
    x = tolower(x);
    y = tolower(y);

    if(x == y)
    {
        return 1 ;
    }
    else if (check_spec_char(x , y) == 1)
    {
        return 1 ;

    } else {

        return 0 ;
    }
}

test case and it's output

r  r
1
    
r  r
0
    
0
    
r  r
0
    
0
    
Process returned 0 (0x0)   execution time : 14.183 s
Press any key to continue.

Use scanf(" %c %c" , &k, &l ); that is insert a space before the first format specifier. — Vlad from Moscow, Jan 04 '17 at 01:59
You probably are not consuming the newline. See [scanf() leaves the new line char in buffer?](http://stackoverflow.com/q/5240789/669576) — 001, Jan 04 '17 at 01:59
@JohnnyMopp thanks alot , this post is really helpful , problem solved — Black Kinght, Jan 04 '17 at 02:08

score 1 · Answer 1 · answered Jan 04 '17 at 02:02

1

Use scanf("%c %c " , &k, &l ); or scanf(" %c %c" , &k, &l ); This will consume your new line stored in buffer.

answered Jan 04 '17 at 02:02

shafayat hossain

1,089
1
8
13

first one does not work for me, but second one works , just adding space before first %c , thanks – Black Kinght Jan 04 '17 at 02:09

C : compare 2 chars

code

test case and it's output

1 Answers1