Using printf() to output the correct number of decimal places?

When I enter 2, I wish to get this output:

value: 2.4

But when I do the multiplication, I am getting this:

value: 2.400000

This is my code:

#include <stdio.h>

int main()
{
  float num;
  float result;
  
  printf("Number: ");
  scanf("%f", &num);
  
  result = num * 1.2;
  printf("Result: %f", result);
}

What can I do?

>Solution :

You need to change your printf() to this:

printf("Result: %.1f", result);

The number after the . and before the f is the precision that specifies the number of digits after the decimal point of a floating-point value.