Session 4 : Multiple Choice

What is the purpose of scanf in C?

• To print output to the console

• To read input from the console

• To allocate memory

• To perform mathematical operations

Which of the following is the correct way to use scanf to read an integer value into variable x?

• scanf("%d", x);

• scanf("%d", &x);

• scanf("d%", x);

• scanf("d%", &x);

What is the purpose of printf in C?

• To read input from the console

• To print output to the console

• To allocate memory

• To perform mathematical operations

How can you read a character input using scanf in C?

• scanf("%c", &ch);

• scanf("%s", ch);

• scanf("%d", ch);

• scanf("%c", ch);

What is the correct format specifier to read a float value using scanf in C?

• %f

• %d

• %s

• %c

What will be the output of the following code if the user enters 12 34?

int main( )

{ int a, b;

scanf("%d %d", &a, &b);

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

return 0; }

• 12 34

• 34 12

• 12 12

• 34 34

What is the purpose of using the & operator in scanf function in C?

• To read input from the console

• To print output to the console

• To perform mathematical operations

• To allocate memory

Which format specifier is used to read a string input using scanf in C?

• %d

• %f

• %s

• %c

What will be the output of the following code snippet in C?

int x = 5;

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

printf("%d", x);

• 5 5

• 5 6

• 6 6

• 6 5

Which of the following is the correct way to read a single character into variable ch and an integer into variable num using scanf?

• scanf("%c %d", ch, num);

• scanf("%c %d", &ch, &num);

• scanf("c% d%", ch, num);

• scanf("c% d%", &ch, &num);