C Fundamentals MCQs

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int a = 3;
    int b = ++a + a++ + --a;
    printf("Value of b is %d", b);
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int i = 0;
    int x = i++, y = ++i;
    printf("%d % d\n", x, y);
    return 0;
}

Which is valid C expression?

What will be the output of the following C code?

#include<stdio.h>
int main()
{
    int a = 1, b = 2, c = 3, d = 4, e;
    e = c + d = b * a;
    printf("%d, %d\n", e, d);
}

While swapping 2 numbers what precautions to be taken care?

b = (b / a);
a = a * b;
b = a / b;

What is the problem in the following variable declaration?

float 3Bedroom-Hall-Kitchen?;

Comment on the following statement.

n = 1;
printf("%d, %dn", 3*n, n++);

Which of the following format identifier can never be used for the variable var?

#include <stdio.h>
int main()
{
    char *var = "The quick brown fox jumps over the lazy dog";
}

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int x = 1, z = 3;
    int y = x << 3;
    printf(" %d\n", y);
}