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What is the correct way to use printf to print a size_t in C/C++?
We should use “%zu” to print the variables of size_t length. We can use “%d” also to print size_t variables, it will not show any error. The correct way to print size_t variables is use of “%zu”.
In “%zu” format, z is a length modifier and u stand for unsigned type.
The following is an example to print size_t variable.
Example
#include <stdio.h>
int main() {
size_t a = 20;
printf("The value of a : %zu", a);
return 0;
}Output
The value of a : 20
In the above program, a variable of size_t length is declared and initialized with a value.
size_t a = 20;
The variables of size_t length is printed as follows −
printf("The value of a : %zu", a);
Updated on: 26-Jun-2020
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