我应该在此C代码中添加些什么以打开多个文件？

Question

This code searches for a set of numbers in a file; if it finds it, it displays the line where it found it. I want this code to search into more than 1 file. After it finished searching in the 1st file, it'll start searching in the second one and so on.

This is the output:

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

    int busca(char *str, char *archNom);
    void archivo(char *nomArchivo);


int main(int argc, char *argv[])
{
   int result, errno;

   if(argc < 3 || argc > 3)
   {
      archivo(argv[0]);
      exit(1);
   }

   result = busca(argv[1], argv[2]);

Answer 1

You could iterate over argv , from 1 to argc - 2 (excluding the first and last elements), and then just run busca(argv[n], argv[argc - 1]) once for each item in the argv array. You'd have to keep track of the result to determine wether an error occurred, perhaps using min() or max() .