C/fwrite: Różnice pomiędzy wersjami
Usunięta treść Dodana treść
m →{{int:filedesc}}: descr |
m →Przykład: https://en.cppreference.com/w/c/io/fwrite |
||
Linia 44:
b[0] = 200;
fwrite(b,1,1,fp);
<syntaxhighlight lang="c">
//https://en.cppreference.com/w/c/io/fwrite
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
enum { SIZE = 5 };
int main(void)
{
double a[SIZE] = {1, 2, 3, 4, 5};
FILE *f1 = fopen("file.bin", "wb");
assert(f1);
size_t r1 = fwrite(a, sizeof a[0], SIZE, f1);
printf("wrote %zu elements out of %d requested\n", r1, SIZE);
fclose(f1);
double b[SIZE];
FILE *f2 = fopen("file.bin", "rb");
size_t r2 = fread(b, sizeof b[0], SIZE, f2);
fclose(f2);
printf("read back: ");
for(size_t i = 0; i < r2; i++)
printf("%f ", b[i]);
}
</syntaxhighlight>
=== Zobacz też ===
| |||