Relational and Logical Operators Quiz Online Practice Test

1. What will be the output of this C code snippet?
#include <stdio.h>
void main()
{
int x = 1, y = 0, z = 5;
int a = x && y || z++;
printf("%d", z);
}

2. What is the result of running this C code?
#include <stdio.h>
void main()
{
int x = 1, y = 0, z = 5;
int a = x && y && z++;
printf("%d", z);
}

3. What will this C code output?
#include <stdio.h>
int main()
{
int x = 1, y = 0, z = 3;
x > y ? printf("%d", z) : return z;
}

4. 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);
}

5. What will this C code output?
#include <stdio.h>
void main()
{
int x = 0, y = 2, z = 3;
int a = x & y | z;
printf("%d", a);
}

6. What will the final value of j be after executing this C code?
#include <stdio.h>
int main()
{
int i = 0, j = 0;
if (i && (j = i + 10))
//do something
;
}

7. What will be the final value of j after running this C code?
#include <stdio.h>
int main()
{
int i = 10, j = 0;
if (i || (j = i + 10))
//do something
;
}

8. What will this C code output?
#include <stdio.h>
int main()
{
int i = 1;
if (i++ && (i == 1))
printf("Yes\n");
else
printf("No\n");
}

9. Do logical operators create sequence points in C?

10. Do logical operators in C use short-circuit evaluation?

11. What does a logical or relational expression return in C?

12. What will d hold after executing the following C code?
#include <stdio.h>
int main()
{
int a = 10, b = 5, c = 5;
int d;
d = b + c == a;
printf("%d", d);
}

13. What will be displayed when the following C code is run?
#include <stdio.h>
int main()
{
int a = 10, b = 5, c = 3;
b != !a;
c = !!a;
printf("%d\t%d", b, c);
}

14. Which of the following is NOT considered a logical or relational operator?

15. What will the following C code output?
#include <stdio.h>
int main()
{
int a = 10;
if (a == a--)
printf("TRUE 1\t");
a = 10;
if (a == --a)
printf("TRUE 2\t");
}

16. Relational operators are not applicable to which of the following?