blog/static/files/c/bonuses/08/counting.c

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#include <ctype.h>
#include <stdio.h>
#include <string.h>
#define UNUSED(x) ((void) (x))
/**
* @brief Counts occurences of any substring in the file.
* @param file File where the substring is to be counted in.
* @param substring Substring to be counted.
* @returns Count of occurences of the substring the given file.
*/
long count_anything(FILE *file, const char *substring)
{
/* TODO */
UNUSED(file);
UNUSED(substring);
return 0;
}
/**
* @brief Counts ananas. Nothing more to it.
* @param file File where the ananas is to be counted in.
* @returns Count of occurences of ananas.
*/
long count_ananas(FILE *file)
{
return count_anything(file, "ananas");
}
/**
* @brief Writes given number to the file, character by character.
* @param file File where the number is supposed to be written.
* @param number Number to be written.
*/
void write_number(FILE *file, long number)
{
/* TODO */
UNUSED(file);
UNUSED(number);
}
/**
* @brief Main function of a program.
* @returns Exit code that denotes following:
* 0 in case of success
* 1 in case of invalid usage
* 2 in case of failure on input file
* 3 in case of failure on output file
*/
int main(int argc, char **argv)
{
if (argc < 3 || argc > 4) {
printf("Usage: %s <input-file> <output-file> [string-to-be-counted]\n", argv[0]);
return 1;
}
/* TODO */
return 0;
}