C Fundamentals MCQs

Which of the following is possible with any 2 operators in C?

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    double b = 5 % 3 & 4 + 5 * 6;
    printf("%lf", b);
}

What will be the output of the following C code? (Initial values: x= 7, y = 8)

#include <stdio.h>
void main()
{
    float x;
    int y;
    printf("enter two numbers \n");
    scanf("%f %f", &x, &y);
    printf("%f, %d", x, y);
}

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int x = 4, y, z;
    y = --x;
    z = x--;
    printf("%d%d%d", x, y, z);
}

Which of the following is not a valid variable name declaration?

Comment on the behaviour of the following C code?

#include <stdio.h>
int main()
{
    int i = 2;
    i = i++ + i;
    printf("%d\n", i);
}

What will be the output of the following C code?

#include<stdio.h>
enum colour
{
    blue, red, yellow
};
main()
{
    enum colour c;
    c=yellow;
    printf("%d",c);
}

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int k = 8;
    int x = 0 == 1 && k++;
    printf("%d%d\n", x, k);
}

Which of the following is not a pointer declaration?