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

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find Size of variable

In this Program, you’ll learn how to find Size of variable like int, float, double and char in C Language.

In this program to find Size of variable we declared 4 variables of type int, float, double and char. Then, the size of each variable is evaluated using sizeof operator.

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

  • Constants
  • Variables
  • Data Types
  • Input-Output

Program to Find the Size of a variable

#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\n",sizeof(integerType));
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

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

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

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

Ask your questions about how to find Size of variable in C and clarify your/others doubts by commenting. Documentation.