lab8-4

#include <stdio.h>
#include <string.h>

void promena(FILE *p, FILE *n, char x, char y) {

    int c;

    if (p == NULL || n == NULL) {
        printf("Datotekata ne postoi.\n");
    } else {

         while(c != EOF) {

            c = fgetc(p);

            if (c != EOF) {
                if (c != x) {
                    fputc(c, n);
                } else {
                    if (c == x) {
                        fputc(y, n);
                    }
                }
            }

        }

    }

}

int main(int argc, char *argv[]) {
    FILE *p;
    FILE *n;
    char x,y;

    printf("\n\nargc = %d\n\n", argc);

    x = argv[3][0];
    y = argv[4][0];
    printf("Ke se zamenat %c so %c\n\n", x, y);

    p = fopen(argv[1], "r");
    n = fopen(argv[2], "w");

    promena(p, n, x, y);

    fclose(p);
    fclose(n);

    return 0;
}