C - TP3 - wc.c

#include <stdio.h>
#include <stdlib.h>

int wc(FILE *str, int opt)
{
    int compt = 0;
    char buffer[256];
    char c;

    if(opt == 1)
    {
        while(fgets(buffer, sizeof(buffer), str))
        {
            compt++;
        }
    }
    else if(opt == 2)
    {
        while(c != EOF)
        {
            c = fgetc(str);
            if (c == ' ')
                compt++;
        }
    }
    else if(opt == 3)
    {
        while(fgetc(str) != EOF)
        {
            compt++;
        }
    }

    return compt;
}

void usage()
{
    printf("wc [-c|-w|-l] FILE\n");
}

int main(int argc, char *argv[])
{
    if(argc != 3)
    {
        usage();
        exit(1);
    }


    FILE *fichier = fopen(argv[2], "r");

    if(!strcmp(argv[1], "-c"))
    {
        printf("%d", wc(fichier, 3));
    }
    else if(!strcmp(argv[1], "-w"))
    {
        printf("%d", wc(fichier, 2));
    }
    else if(!strcmp(argv[1], "-l"))
    {
        printf("%d", wc(fichier, 1));
    }
    else
    {
        usage();
        exit(1);
    }


    return 0;
}