C Program to Find the Size of int, float, double and char
This program declares 4 variables of type int, float, double and char. Then, the size of each variable is evaluated using sizeof the operator.
Example: 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
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.
C program that demonstrates how to find the size of int, float, double, and char data types:
#include <stdio.h>
int main() {
printf("The size of int is %lu bytes.\n", sizeof(int));
printf("The size of float is %lu bytes.\n", sizeof(float));
printf("The size of double is %lu bytes.\n", sizeof(double));
printf("The size of char is %lu bytes.\n", sizeof(char));
return 0;
}
When you run this program, you should see an output that looks something like this:
The size of int is 4 bytes.
The size of float is 4 bytes.
The size of double is 8 bytes.
The size of char is 1 bytes.
Note that the sizeof the operator returns the size of a data type in bytes, so we use %lu (unsigned long) to print the result. Also, note that the sizes of these data types may vary depending on the platform you’re running the program on.