Pointers - C Questions
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C Operators Tricky Questions
In most of the MNC interview questions such as in ZOHO interview question, IVTL Infoview interview questions, Amazon interview questions, GOOGLE interview questions, Infosys interview questions and even in Voonik interview questions, We come across several Tricky C Questions about which 2:5 of the questions are from Operators in c. Solving that kind of tricky C questions is not an easy task for all C programmers. We need more practices to solve it with ease. So we provide 25+ interesting C questions in Operators to make your MNC interview very easy.
Operators Tricky Questions
11. What will be the output of the C program?
#include<stdio.h>
int main()
{
int a = 5;
a = 1, 2, 3;
printf("%d", a);
return 0;
}
x
Option: D
Explanation
Priority for the values assigned to any variable is given from left to right.
12. What will be the output of the C program?
#include<stdio.h>
int main()
{
int a;
a = (1, 2, 3);
printf("%d", a);
return 0;
}
x
Option: A
Explanation
Priority for the values inside a brackets () assigned to any variable is given from right to left.
13. What will be the output of the C program?
#include<stdio.h>
int main()
{
int x[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
printf("%d",sizeof(x));
return 0;
}
x
Option: D
Explanation
Now we go straight way to the program.
Here x is an array variable which holds 10 integer values. Thus sizeof int is 4, then 4 * 10 = 40.
14. What will be the output of the C program?
#include<stdio.h>
int main()
{
unsigned int num = -4;
printf("%d", ~num);
return 0;
}
x
Option: B
Explanation
~ is a One's Complement bitwise operator.
the function of ~ is a One's Complement is to inverse all value only after converting a decimal value to binary 0's and 1's
Here int num = -4;
which is num = -100 (in binary 0's and 1's)
~num = +011 (in binary 0's and 1's)
~num = 3
15. What will be the output of the C program?
#include<stdio.h>
int main()
{
int x = 2;
(x & 1) ? printf("true") : printf("false");
return 0;
}
x
Option: C
Explanation
As & is a unary operator we have to assume all decimal values to binary(0's and 1's)
int x = 2 (in decimal)
x = 00000010( in decimal 0's and 1's)
Now we go for condition (00000010 & 00000001)
Clearly, condition false as it leads to 0 when multiplied.
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