Pointers - C Questions
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Memory Allocation - 1 Memory Allocation - 2The ones who are crazy enough to think they can change the world are the ones who do.- Steve Jobs
C Variables Questions and Answers
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 Variables 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 Variables to make your MNC interview very easy.
C Variables Questions
16. What will be the output of the C program?
#include<stdio.h>
int main()
{
int main = 47;
printf("%d",main);
return 0;
}
x
Option: D
Explanation
main can be declared as a variable name, but not as a function name.
17. What will be the output of the C program?
#include<stdio.h>
int main()
{
extern num;
printf("%d",num);
return 0;
}
int num = 36;
x
Option: A
Explanation
Here num is a variable name of external type, thus declaring a value to the same variable name outside the scope is must.
18. What will be the output of the C program?
#include<stdio.h>
int main()
{
int xyz = 20;
{
int xyz = 40;
}
printf("%d",xyz);
return 0;
}
x
Option: D
Explanation
int xyz = 20; is a global variable, and int xyz = 40 is a local variable, Here we are calling xyz outside the scope of xyz = 40. Thus it outputted 20.
19. What will be the output of the C program?
#include<stdio.h>
int main()
{
int xyz = --20;
printf("%d",xyz);
return 0;
}
x
Option: B
Explanation
decrement or increment operator cannot be initialize to any values.
20. What will be the output of the C program?
#include<stdio.h>
int main(){
char arr[] = "Cat";
*arr = 'B';
printf("%s", arr);
return 0;
}
x
Option: C
Explanation
*arr = 'B' tells to compiler to replace the first letter of arr[] to 'B'. Thus Cat changes to Bat.
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