http://www.eyny.com/viewthread.php?tid=5486935

gistfile1.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define BUFFERSIZE 1024
//
void MyFile(const char* fn);
int main(void)
{
	MyFile("C:\\123.txt");
	//
	system("PAUSE");
	return 0;
}
void MyFile(const char* fn)
{
	FILE * pFile_Read = NULL;
	char buffer[BUFFERSIZE] = {0};
	// 開檔：讀取檔案
	pFile_Read  = fopen(fn, "r");
	if ( pFile_Read == NULL ) 
	{
		printf("檔案開啟失敗...\n");
	}
	else
	{
		printf("%s ", fn);
		while( feof(pFile_Read) == 0 ){
			fgets(buffer, BUFFERSIZE, pFile_Read);
			printf("%s ", buffer);
		}
		fclose(pFile_Read);
		printf("\n");
	}
}