Hello fellas hope you all doing well i am kinda newbie in C language, I just need to ask a basic question that is that when i divide numbers in C like this:
#include<stdio.h>
main()
{
float a = 15/4;
printf("%.2f", a);
}
the division happens but the answer comes in a form like 3.00(which is not correct it did'nt count the remainders) But when i program it like this:
#include<stdio.h>
main()
{
float a = 15;
float b = 4;
float res = a/b;
printf("%.2f", res);
}
this method gives me the correct answer. So i want to ask the reason behind the difference b/w these two programs why doesn't the first method works and why the second method working?
In this expression
15/4
the both operands have integer types (more precisely the type int). So the integer arithmetic is performed.
If at least one operand had a floating point type (float or double) as for example
15/4.0
or
15/4.0f
then the result will be a floating point number (in the first expression of the type double and in the second expression of the type float)
And in this expression
a/b
the both operands have floating point types (the type float). So the result is also a floating point number.