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 Preprocessor and Macros 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 Preprocessor and Macros 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 Preprocessor and Macros to make your MNC interview very easy.
C Preprocessor and Macros Questions
6. What will be the output of the C program?
#include<stdio.h>
50;
int main()
{
printf("%d\n",50);
return 0;
}
x
Option: C
Explanation
Expected unqualified-id before numeric constant error will occur. Though 50; is an executable statement inside main() function, it won't outside the main() function.
7. What will be the output of the C program?
#include<stdio.h>
int main(){
printf("%p",main);
return 0;
}
x
Option: A
Explanation
Some memory address will be printed.
8. What will be the output of the C program?
#include<stdio.h>
#define x 10;
int main()
{
printf("%d",x);
return 0;
}
x
Option: D
Explanation
Preprocessor should not terminate with semicolon.
9. What will be the output of the C program?
#include<stdio.h>
enum colors {apple,orange,mango};
int main()
{
printf("%d %d %d",mango,apple,orange);
return 0;
}
x
Option: B
Explanation
enum assigns numbers starting from 0, if not explicitly defined by some other integer.
10. What will be the output of the C program ?
#include<stdio.h>
#define CONDITION(i)
printf("preprocessor\n");
int main()
{
CONDITION(0);
return 0;
}
x
Option: C
Explanation
#define CONDITION(i) must be terminated my backslash (\) to follow the next line.
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