C String - Predict output

Predict Program Output Based on C String

Output of following C Programs are not very simple. These are simple but very interesting top c programs based on C Strings asked during viva and interviews.

Program-1

#include <stdio.h> 
int main () 
{ 
    char greeting[6] = {'H', 'e', 'l', 'l', 'o', '\0'};
    printf("Greeting message: %s\n", greeting ); 
    return 0; 
}

Program-2

#include "stdio.h" 
int main() 
{ 
    char str[] = { 'A', 'B', 'C', 'D' }; 
    char *p = &str[1]; 
    *p++;
    printf("%c ", *p);
    *p++;
    printf("%c ", *p);
} 

Program-3

#include<stdio.h>
#include<string.h>
int main()
{
    char str1[20] = "C Program";
    char str2[20] = "C Practicals";
    printf("%s\n", strcpy(strcat(str1, str2), str2));
    return 0;
}

Program-4

#include<stdio.h>
#include<string.h>
int main()
{
    printf("%d", strlen("01234567"));
    return 0;
}

Program-5

#include<stdio.h>
int main()
{
    printf(10 + "C Program Practicals");
    return 0;
}

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