Size of Operator in C language

The size of the sizeof operator in the C language is determined at compile time. It is used to calculate the size, in bytes, of a data type or a variable. The result of the sizeof operator is an unsigned integer value.

Here is an example of how the sizeof operator is used:

#include <stdio.h>

int main() {
    int num = 10;
    printf("The size of an integer is: %zu bytes\n", sizeof(int));
    printf("The size of the variable 'num' is: %zu bytes\n", sizeof(num));
    return 0;
}

Output:

The size of an integer is: 4 bytes
The size of the variable 'num' is: 4 bytes

In this example, the sizeof operator is used to determine the size of the int data type and the variable num. The %zu format specifier is used to print the size as an unsigned integer.

Please note that the size of a data type may vary depending on the compiler and the platform being used. The example above shows the size of an int as 4 bytes, but it may be different on different systems.

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