Write a Program to Find the Size of datatype

#include <stdio.h>
int main()
    int integerType;
    float floatType;
    double doubleType;
    char charType;
    // Sizeof operator is used to evaluate the size of a variable

    printf("Size of int: %ld bytes",sizeof(integerType));
    printf("Size of float: %ld bytes",sizeof(floatType));
    printf("Size of double: %ld bytes",sizeof(doubleType));
    printf("Size of char: %ld byte",sizeof(charType));
    return 0;


Size of int: 4 bytes
Size of float: 4 bytes
Size of double: 8 bytes

Size of char: 1 byte


In this program, 4 variables integerType, floatType, doubleType and charType are declared having int, float, double and char type respectively.