C Program to Find the Size of int, float, double and char

C Program to Find the Size of int, float, double and char

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

To understand this example, you should have knowledge of the following C programming topics:

C Data Types

C Variables, Constants, and Literals

C Input-Output (I/O)

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Program to Find the Size of Variables

#include<stdio.h>
int main() {
    int intType;
    float floatType;
    double doubleType;
    char charType;

    // sizeof evaluates the size of a variable
    printf("Size of int: %ld bytes\n", sizeof(intType));
    printf("Size of float: %ld bytes\n", sizeof(floatType));
    printf("Size of double: %ld bytes\n", sizeof(doubleType));
    printf("Size of char: %ld byte\n", sizeof(charType));
    
    return 0;
}

Output

Size of int: 4 bytes
Size of float: 4 bytes
Size of double: 8 bytes
Size of char: 1 byte

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In this program, 4 variables intType, floatType, doubleType and charType are declared.

Then, the size of each variable is computed using the sizeof operator.

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Please feel free to give your comment if you face any difficulty here.

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