C Preprocessor - C Programming MCQ Questions and Answers Page-5 section-1

41.

What will be output after executing following code?

#include<stdio.h>
# define a 10
void main()
{
    printf("%d..", a);
    foo();
    printf("%d", a);
}
void foo()
{
   #undef a
   #define a 50
}

A. 10..50

B. 10..10

C. 0

D. Error

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42.

The output of the following program is:

#define f(g,g2) g##g2
void main()
{
   int var12=100;
   printf("%d", f(var,12));
}

A. Syntax error

B. Runtime error

C. g##g2

D. 100

E. 10012

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43.

Find the output of the following program.

#define INC(X) X++
void main()
{
   int x=4;
   printf("%d", INC(x++));
}

A. 4

B. 5

C. 6

D. Error

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44.

What will be the output of the following C code?

#include<stdio.h>
#define max 20
main()
{
    #ifndef max
    #define min 10
    #else
    #define min 30
    #endif
    printf("%d",min);
}

A. 10

B. 20

C. 30

D. error

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45.

What will be the output of the following C code?

#define display(text) "$" #text
main()
{
    printf(display(hello	   world));
}

A. hello world

B. $helloworld

C. $hello world

D. error

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46.

What will be the output of the following C code?

#include <stdio.h>
#define Shyam(x)  #x
int main()
{
    int marks=100;
    printf("value of %s is = %d\n",Shyam(marks),marks);
    return 0;
}

A. error

B. value of marks=100

C. value of=100

D. 100

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47.

What will be the output of the following C code?

#include<stdio.h>
#define max 100
void main()
{
    #if(max%10)
    printf("Exam");
    #endif
    printf("Veda");
}

A. error

B. Exam

C. Veda

D. ExamVeda

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48.
. . . . . . . . is the preprocessor directive which is used to end the scope of #ifdef.

A. #elif

B. #ifndef

C. #endif

D. #if

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49.
In the directive #pragma pack(n), if the value of 'n' is given to be 5, then what happens?

A. Error

B. Warning but no error

C. Executes the pragma statement

D. Ignores the pragma statement and executes the program

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50.

What will be the output of the following C code?

#include<stdio.h>
#define INDIA 1
#define US 2
#define CC US
main()
{
    #if CC==INDIA
    printf("Rupee");
    #elif CC==US
    printf("Dollar");
    #else
    printf("Euro");
    #endif 
}

A. Euro

B. Rupee

C. Dollar

D. Error

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41.
What will be output after executing following code?

`#include<stdio.h> # define a 10 void main() { printf("%d..", a); foo(); printf("%d", a); } void foo() { #undef a #define a 50 }`

Answer & Solution

42.
The output of the following program is:

`#define f(g,g2) g##g2 void main() { int var12=100; printf("%d", f(var,12)); }`

Answer & Solution

43.
Find the output of the following program.

`#define INC(X) X++ void main() { int x=4; printf("%d", INC(x++)); }`

Answer & Solution

44.
What will be the output of the following C code?

`#include<stdio.h> #define max 20 main() { #ifndef max #define min 10 #else #define min 30 #endif printf("%d",min); }`

Answer & Solution

45.
What will be the output of the following C code?

`#define display(text) "$" #text main() { printf(display(hello world)); }`

Answer & Solution

46.
What will be the output of the following C code?

`#include <stdio.h> #define Shyam(x) #x int main() { int marks=100; printf("value of %s is = %d\n",Shyam(marks),marks); return 0; }`

Answer & Solution

47.
What will be the output of the following C code?

`#include<stdio.h> #define max 100 void main() { #if(max%10) printf("Exam"); #endif printf("Veda"); }`

Answer & Solution

48.
. . . . . . . . is the preprocessor directive which is used to end the scope of #ifdef.

Answer & Solution

49.
In the directive #pragma pack(n), if the value of 'n' is given to be 5, then what happens?

Answer & Solution

50.
What will be the output of the following C code?

`#include<stdio.h> #define INDIA 1 #define US 2 #define CC US main() { #if CC==INDIA printf("Rupee"); #elif CC==US printf("Dollar"); #else printf("Euro"); #endif }`

Answer & Solution

C Preprocessor - C Programming MCQ Questions and Answers

41. What will be output after executing following code? #include<stdio.h> # define a 10 void main() { printf("%d..", a); foo(); printf("%d", a); } void foo() { #undef a #define a 50 }

Answer & Solution

42. The output of the following program is: #define f(g,g2) g##g2 void main() { int var12=100; printf("%d", f(var,12)); }

Answer & Solution

43. Find the output of the following program. #define INC(X) X++ void main() { int x=4; printf("%d", INC(x++)); }

Answer & Solution

44. What will be the output of the following C code? #include<stdio.h> #define max 20 main() { #ifndef max #define min 10 #else #define min 30 #endif printf("%d",min); }

Answer & Solution

45. What will be the output of the following C code? #define display(text) "$" #text main() { printf(display(hello world)); }

Answer & Solution

46. What will be the output of the following C code? #include <stdio.h> #define Shyam(x) #x int main() { int marks=100; printf("value of %s is = %d\n",Shyam(marks),marks); return 0; }

Answer & Solution

47. What will be the output of the following C code? #include<stdio.h> #define max 100 void main() { #if(max%10) printf("Exam"); #endif printf("Veda"); }

Answer & Solution

48. . . . . . . . . is the preprocessor directive which is used to end the scope of #ifdef.

Answer & Solution

49. In the directive #pragma pack(n), if the value of 'n' is given to be 5, then what happens?

Answer & Solution

50. What will be the output of the following C code? #include<stdio.h> #define INDIA 1 #define US 2 #define CC US main() { #if CC==INDIA printf("Rupee"); #elif CC==US printf("Dollar"); #else printf("Euro"); #endif }

Answer & Solution

41.
What will be output after executing following code?

`#include<stdio.h> # define a 10 void main() { printf("%d..", a); foo(); printf("%d", a); } void foo() { #undef a #define a 50 }`

42.
The output of the following program is:

`#define f(g,g2) g##g2 void main() { int var12=100; printf("%d", f(var,12)); }`

43.
Find the output of the following program.

`#define INC(X) X++ void main() { int x=4; printf("%d", INC(x++)); }`

44.
What will be the output of the following C code?

`#include<stdio.h> #define max 20 main() { #ifndef max #define min 10 #else #define min 30 #endif printf("%d",min); }`

45.
What will be the output of the following C code?

`#define display(text) "$" #text main() { printf(display(hello world)); }`

46.
What will be the output of the following C code?

`#include <stdio.h> #define Shyam(x) #x int main() { int marks=100; printf("value of %s is = %d\n",Shyam(marks),marks); return 0; }`

47.
What will be the output of the following C code?

`#include<stdio.h> #define max 100 void main() { #if(max%10) printf("Exam"); #endif printf("Veda"); }`

48.
. . . . . . . . is the preprocessor directive which is used to end the scope of #ifdef.

49.
In the directive #pragma pack(n), if the value of 'n' is given to be 5, then what happens?

50.
What will be the output of the following C code?

`#include<stdio.h> #define INDIA 1 #define US 2 #define CC US main() { #if CC==INDIA printf("Rupee"); #elif CC==US printf("Dollar"); #else printf("Euro"); #endif }`