What will be the output of the program in Turbo C?

#include<stdio.h>

int main()
{
    char str[10] = "India";
    str[6] = "BIX";
    printf("%s\n", str);
    return 0;
}

What will be the output of the program ?

#include<stdio.h>

int main()
{
    char str1[] = "Hello";
    char str2[] = "Hello";
    if(str1 == str2)
        printf("Equal\n");
    else
        printf("Unequal\n");
    return 0;
}

What will be the output of the program ?

#include<stdio.h>

int main()
{
    char t;
    char *p1 = "India", *p2;
    p2=p1;
    p1 = "BIX";
    printf("%s %s\n", p1, p2);
    return 0;
}

What will be the output of the program ?

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

int main()
{
    printf("%c\n", "abcdefgh"[4]);
    return 0;
}

What will be the output of the following program in 16 bit platform assuming that 1022 is memory address of the string "Hello1" (in Turbo C under DOS) ?

#include<stdio.h>

int main()
{
    printf("%u %s\n", &"Hello1", &"Hello2");
    return 0;
}

Which of the following statements are correct about the program below?

#include<stdio.h>

int main()
{
    char str[20], *s;
    printf("Enter a string\n");
    scanf("%s", str);
    s=str;
    while(*s != '\0')
    {
        if(*s >= 97 && *s <= 122)
            *s = *s-32;
        s++;
    }
    printf("%s",str);
    return 0;
}

Which of the following statements are correct about the below declarations?
char *p = "Sanjay";
char a[] = "Sanjay";
1: There is no difference in the declarations and both serve the same purpose.
2: p is a non-const pointer pointing to a non-const string, whereas a is a const pointer pointing to a non-const pointer.
3: The pointer p can be modified to point to another string, whereas the individual characters within array a can be changed.
4: In both cases the '\0' will be added at the end of the string "Sanjay".

Which of the following statements are correct ?
1: A string is a collection of characters terminated by '\0'.
2: The format specifier %s is used to print a string.
3: The length of the string can be obtained by strlen().
4: The pointer CANNOT work on string.

Which of the following statement is correct?

Will the program compile successfully?

#include<stdio.h>

int main()
{
    char a[] = "India";
    char *p = "BIX";
    a = "BIX";
    p = "India";
    printf("%s %s\n", a, p);
    return 0;
}