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C Language - Functions

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31.

#incude

int main(){

int a=5,b=10;

swap(&a,&b);

printf("%d %d",a,b);

return 0;

}

void swap(int *a,int *b){

int *temp;

*temp =*a;

A.	5 10	B.	10 5
C.	5 5	D.	10 10

32.

void main()

{

int a=1,b=5,c;

clrscr();

c=operation(a,b);

printf("%d",c);

getch();

}

int operation(int a,int b)

{

int c;

c=++a * ++a * b++;

return c;

}

*a=*b;

*b=*temp;

}

A.	35	B.	40
C.	45	D.	55

33.

void swap(int,int);

void main()

{

int a=10,b=15;

clrscr();

printf("Befor swap a=%d ,b=%d",a,b);

swap(a,b);

printf("\nAfter swap a=%d ,b=%d",a,b);

getch();

}

void swap(int a,int b)

{

int c;

c=a;

a=b;

b=c;

}

A.	Before swap a=10,b=15 After swap a=10,b=20	B.	Before swap a=10,b=15 After swap a=10,b=15
C.	Before swap a=10,b=15 After swap a=15,b=20	D.	Before swap a=10,b=15 After swap a=15,b=10

34.

#include

int i;

int fun();

int main()

{

while(i)

{

fun();

main();

}

printf("Hello\n");

return 0;

}

int fun()

{

printf("Hi");

}

A.	Hello	B.	Hi Hello
C.	No output	D.	Infinite loop

35.

What is the output of this program?

#include

using namespace std;

class Box

{

double width;

public:

friend void printWidth( Box box );

void setWidth( double wid );

};

void Box::setWidth( double wid )

{

width = wid;

}

void printWidth( Box box )

{

box.width = box.width * 2;

cout << "Width of box : " << box.width << endl;

}

int main( )

{

Box box;

box.setWidth(10.0);

printWidth( box );

return 0;

}

A.	40	B.	5
C.	10	D.	20

36.

What will be output if you will compile and execute the following c code?

void main(){

int a=10;

printf("%d %d %d",a,a++,++a);

}

A.	12 11 11	B.	12 10 10
C.	11 11 12	D.	10 10 12

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