1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | #include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include "clog.h"
int main(int argc, char* argv[]) {
char const* filename = __FILE__ ".txt"; // OPTIONAL
// Concatenate filename of this C file
// with ".txt". Remember that __FILE__
// is expanded by the preprocessor to a
// string literal (e.g., "o.c"). Putting
// two string literals next to each other
// concatenates them. (That does not work
// with variables---only constants like "…").
log_str(filename);
logf_yellow("OPEN a file\n");
FILE* fp = fopen(filename, "w");
logf_yellow("WRITE to file using fputs(…).\n");
fputs("ABC", fp);
// fputc('A', fp);
// fputc('B', fp);
// fputc('C', fp);
logf_yellow("CLOSE file\n");
fclose(fp);
// Always close any file that you opened. If you forget, Valgrind may report errors.
return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */
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