Question

What stdio.h input function would be used to get input from the user by the keyboard? Write the code to obtain the voltage drop across a resister from the user. Assume the input variable is called vr1. What stdio.h output function would be used to provide output to the monitor?

Answer 1

Answer:

scanf() function is used to get a input from keyboard.This function is in the stdio.h library.To use this function we must include the stdio.h library first in the code. Then only we can use the scanf() function in any code.printf() function is used to print anything .this function is from stdio.h library.

Code to read voltage drop across the register.

#include <stdio.h>

// main function

int main(void) {

// variable

double vr1;

printf("Enter voltage drop:");

// read  voltage drop from user

scanf("%lf",&vr1);

// print voltage drop

printf("voltage drop is:%0.2lf",vr1);

return 0;

}

Output:

Enter voltage drop:200.4                                                                                                  

voltage drop is:200.40