Thread: Assigning a char value to char pointer doesn't work.

I'm trying to assign a char value to an char pointer. The problem is
when I comment

Code:

char *a = "Some Birds Can't Fly";

the printed display is

Code:

B

however without commenting above, it gives, lot of scrambled characters. Can you check the code and let me know what's happening.

Code:

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

char *assign_char(char *str, char ch)
{


    size_t len = strlen(str);
    char *strRslt = malloc( len + 2 );

    strcpy(strRslt, str);
    strRslt[len] = ch;
    strRslt[len+1] = '\0';
    
    return strRslt;

}

int main(void)
{
    char *b;
    char *a = "Some Birds Can't Fly";
    char ch = 'B';

    b = assign_char(b, ch);

    printf("%s\n", b);

    return 0;
}

compiled with

Code:

gcc main.c -o main