C program to calculate the size of int, float, double, and char

Comprehensive Collection of C Programming Examples

In this example, you will learn to use the sizeof operator to evaluate the size of each variable.

Program to find the size of variables

#include<stdio.h>
int main() {
　　　　int intType;
　　　　float floatType;
　　　　double doubleType;
　　　　char charType;
　　　　//　Calculate the size of a variable using sizeof
　　　　printf("The size of int: %ld bytes\n", sizeof(intType));
　　　　printf("The size of float: %ld bytes\n", sizeof(floatType));
　　　　printf("The size of double: %ld bytes\n", sizeof(doubleType));
　　　　printf("The size of char: %ld bytes\n", sizeof(charType));
　　　　
　　　　return 0;
}

Output Result

The size of int:　4　bytes
The size of float:　4　bytes
The size of double:　8　bytes
The size of char:　1　bytes

In this program, the following variables are declared4variables intType, floatType, doubleType, and charType.

Then, use the sizeof operator to calculate the size of each variable.

Comprehensive Collection of C Programming Examples