c_cpp C - 档案io

Posted 2021-05-14

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

int main(int argc, char *argv[])
{
	if (argc != 3){
		printf("Usage: %s dir1/fileA dir2/fileB\n", argv[0]);
		exit(1);
	}

	FILE *fp1, *fp2;

	char *file1 = argv[1];
	char *file2 = argv[2];
	char *error_str = "Open file ";

	if (NULL == (fp1 = fopen(file1, "r"))){
		sprintf(error_str, "Error open file %s\n", file1);
		perror(error_str);
		exit(1);
	}

	if (NULL == (fp2 = fopen(file2, "w"))){
		sprintf(error_str, "Error open file %s\n", file2);
		perror(error_str);
		exit(1);
	}

	int ch;
	while ((ch = fgetc(fp1)) != EOF){
		fputc(ch, fp2);
	}

	fclose(fp1);
	fclose(fp2);
	
	return 0;
}