How to compile %z specifier in my code with dev-c++ editor

Asked Apr 30 '19 at 10:53

Active Apr 30 '19 at 11:04

Viewed 72 times

I have to compile a c program files with %zu specifier but the printf function always show zu without showing the true value. I have use dev-C++5.11 and my TDM_GCC is version 4.9.2

#include <stdio.h>
#include <stddef.h>
#include <stdint.h>
int main(void) {
   const size_t x = 150;
   int a[x];
   for (size_t i = 0;i < x; ++i)
      a[i] = i;
   printf("SIZE_MAX = %lu\n", SIZE_MAX);
   size_t size = sizeof(a);
   printf("size = %zu\n", size);
}

And the result is

SIZE_MAX = 4294967295

size = zu

May I know how to make compiler show the true value in the size. Thanks You.

edited Jun 20 '20 at 09:12

Community

asked Apr 30 '19 at 10:53

lawrence

2

`printf("size = %u\n", size);` --> `printf("size = %zu\n", size);` – Achal Apr 30 '19 at 10:56
The code you posted prints 600 for size in dev c++ – Arthur Green Apr 30 '19 at 10:57
Maybe %zu specifier may not be use in my compiller, although I use -std=c99 or -std=gnu99 but why it can print sizeof but cannot print %zu? – lawrence Apr 30 '19 at 11:01
@lawrence In devc++, the best way to print a size_t value is to use %lu and cast the value to an unsigned long. – Arthur Green Apr 30 '19 at 11:04
Okay, Thanks You for your comment. – lawrence Apr 30 '19 at 11:05
2

@lawrence dev-C++ is not a compiler. You're probably using the MingW compiler which in turn uses the MSVCRT C library... and this is a known issue – Antti Haapala -- Слава Україні Apr 30 '19 at 11:12
Thanks You for your comment. – lawrence Apr 30 '19 at 11:59

How to compile %z specifier in my code with dev-c++ editor

0 Answers0