What are the concepts of pre-increment and post-increment? / C ++Where are static variables stored in C?

We should use '%zu' to print variables of type size_t. We can also use '%d' to print size_t variables, which will not show any errors. The correct way to print a size_t variable is to use '%zu'.

In the format '%zu', 'z' is the length modifier, and 'u' indicates an unsigned type.

The following is an example of printing a size_t variable.

Example

#include <stdio.h>
int main() {
　　　size_t a =　20;
　　　printf("The value of a: %zu", a);
　　　return 0;
}

Output Result

The value of 'a':　20

In the above program, a variable of type size_t named 'length' is declared and initialized with a value.

size_t a =　20;

The variable 'size_t length' is printed as follows:

printf("The value of a: %zu", a);