Input And Output in C

A format specifier does what?

• specifies the format of input or output

• specifies the format of input only

• specifies the format of output only

• specifies the format of your hard drive

Which format specifier is often used to print integers?

• %c

• %d

• %f

• %x

Which of the following is a valid way to accept user input in the form of an integer value and store it in a variable named entry?

• scanf(%d, &entry);

• scanf("%s", &entry);

• scanf("%d", &entry);

• scanf(%s, &entry);

Assume we've used a float variable to store a price in dollars that we want to display in standard currency format (ex. $3.75). Which of the following uses printf() to correctly display that price?

• printf("Price: $%d", price);

• printf(Price: $%f, price);

• printf("Price: $", %f, price);

• printf("Price: $%f", price);

To print out a and b given below, which of the following printf() statement will you use?

#include<stdio.h>

float a=3.14;

double b=3.14;

• printf("%f %lf", a, b);

• printf("%Lf %f", a, b);

• printf("%Lf %Lf", a, b);

• printf("%f %Lf", a, b);

To scan a and b given below, which of the following scanf() statement will you use?

#include<stdio.h>

float a;

double b;

• scanf("%f %f", &a, &b);

• scanf("%Lf %Lf", &a, &b);

• scanf("%f %Lf", &a, &b);

• scanf("%f %lf", &a, &b);

What will be the output of the program if value 25 given to scanf()?

• 25

• 2.5

• 1

• 0

What will be the output of the program ?

• %%

• %

• Error

• %%%%

What will be the output of the program ?

• 3.15

• 3.00

• 3.2

• 3

Point out the error in the program?

• Error: we may not get input for second scanf() statement

• Error: suspicious char to in conversion in scanf()

• None of above

• No error