C Programming - Control Instructions

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

#include<stdio.h>
int main()
{
    int i = 10, j = 20;
    if(i = 5) && if(j = 10)
        printf("Have a nice day");
    return 0;
}

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

#include<stdio.h>
int main()
{
    int i = 10, j = 15;
    if(i % 2 = j % 3)
        printf("IndiaBIX\n");
    return 0;
}

Which of the following statements are correct about the program?

#include<stdio.h>
int main()
{
    int x = 30, y = 40;
    if(x == y)
        printf("x is equal to y\n");

    else if(x > y)
        printf("x is greater than y\n");

    else if(x < y)
        printf("x is less than y\n")
    return 0;
}

Which of the following statements are correct about an if-else statements in a C-program?

1:	Every if-else statement can be replaced by an equivalent statements using   ?: operators
2:	Nested if-else statements are allowed.
3:	Multiple statements in an if block are allowed.
4:	Multiple statements in an else block are allowed.

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

#include<stdio.h>
int main()
{
    int i = 0;
    i++;
    if(i <= 5)
    {
        printf("IndiaBIX\n");
        exit(0);
        main();
    }
    return 0;
}