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libclayer/examples/printf_str_va.c

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2022-12-25 03:58:00 -05:00
#include <kernaux/printf.h>
#include <assert.h>
#include <string.h>
#define BUFFER_SIZE 1024
static char buffer[BUFFER_SIZE];
static int my_snprintf(const char *const format, ...)
{
va_list va;
va_start(va, format);
const int result = kernaux_vsnprintf(buffer, sizeof(buffer), format, va);
va_end(va);
return result;
}
void example_main()
{
const int result = my_snprintf("Hello, %s! Session ID: %u.", "Alex", 123);
assert((size_t)result == strlen(buffer));
assert(strcmp(buffer, "Hello, Alex! Session ID: 123.") == 0);
}