Pre-CA4

Which of the following is true ?

• gets() can read a string with newline characters but a normal scanf() with %s can not.

• gets() can read a string with spaces but a normal scanf() with %s can not.

• gets() can always replace scanf() without any additional code.

• None of the Them.

#include <stdio.h>

int main()

{

    int i = 3;

    printf("%d", (++i)++);

    return 0;

}

What is the output of the above program?

• 3

• 4

• 5

• Compile-time error.

Predict the output .

#include <stdio.h>

 

int main()

{

   float c = 5.0;

   printf ("Temperature in Fahrenheit is %.2f", (9/5)*c + 32);

   return 0;

}

• Temperature in Fahrenheit is 41.00

• Temperature in Fahrenheit is 37.00

• Temperature in Fahrenheit is 0.00

• Compiler Error.

What is the output of the below program?

#include <stdio.h>

int main()

{

    int i = 0;

    switch (i)

    {

        case '0': printf("Geeks");

                break;

        case '1': printf("Quiz");

                break;

        default: printf("GeeksQuiz");

    }

    return 0;

}

• Geeks

• Quiz

• GeeksQuiz

• Compile-time error.

#include <stdio.h>

#define a 10

int main()

{

  printf("%d ",a);

 

  #define a 50

 

  printf("%d ",a);

  return 0;

}

Output ?

• Compiler Error

• 10 50

• 50 50

• 10 10

Predict output of following program

#include <stdio.h>

int main()

{

    int i;

    int arr[5] = {1};

    for (i = 0; i < 5; i++)

        printf("%d ", arr[i]);

    return 0;

}

• 1 followed by four garbage values

• 1 0 0 0 0

• 1 1 1 1 1

• 0 0 0 0 0

# include <stdio.h>

 

int main()

{

   char str1[] = "GeeksQuiz";

   char str2[] = {'G', 'e', 'e', 'k', 's', 'Q', 'u', 'i', 'z'};

   int n1 = sizeof(str1)/sizeof(str1[0]);

   int n2 = sizeof(str2)/sizeof(str2[0]);

   printf("n1 = %d, n2 = %d", n1, n2);

   return 0;

}

What is the output of following program?

• n1 = 10, n2 = 9

• n1 = 10, n2 = 10

• n1 = 9, n2 = 9

• n1 = 9, n2 = 10