PRF192

Which is the proper declaration of a string named str which stores the value "Melodies"

• char str[]="Melodies";

• char str[7]="Melodies";

• char str[9]= 'Melodies';

• char str[]=Melodies;

What can NOT be included in the variable name in C?

• Digits

• Underscore (_)

• Letters

• Dash (-)

Which of the following data type occupied 1 byte?

• float

• double

• char

• int

What is the correct prototype in C? (choose 3)

• doFunc(); char;

• int doFunc(int, int);

• void doFunc(int x, int y);

• char doFunc()

• float doFunc(void);

What is the output when the sample code below is executed?

int y = 30;

void foo(int *x){

 x= &y;

 *x=12;

}

int main(){

 int v=10;

 foo(&v);

 printf("%d",v);

 printf("\n");

 return 0;

}

• 10

• 8

• 14

• address of x

• 12

What is the only function all C programs must contain?

• system()

• start()

• main()

• program()

puts() function can display only one string at a time where as gets() is capable of receiving only one string at a time and can receive a multi-word string.

• True

• False

scanf() function does not return any value

• True

• False

What is the correct prototype for open a file?

• FILE *fopen(char file_name[], char mode[]);

• FILE fopen(FILE fp, char mode[]);

• int fopen(FILE fp, char mode[]);

• FILE *fopen(char file_name[])

What will be the output of the following program?

#include<stdio.h>

int fun (int arr[], int n)

{

 int rs = 1;

 for (int i = 0; i < n; i++)

 rs *= arr[i];

 return rs;

}

int main()

{

 int a[3] = (2,3,4);

 printf( "%d ", fun(a,3));

 return 0;

}

• 24

• 25

• 27

• 26