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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.

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


Program to Find the Size of Variables

#include 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

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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