C文件处理相关

#include "stdafx.h"
#include "stdio.h"
#include "stdlib.h"
int main(int argc, char* argv[])
{
　　printf("%d\n",argc);
　　printf("%s\n",argv[0]);
　　printf("%s\n", argv[1]);
　　return 0;
}

#include "stdafx.h"
#include "stdio.h"
#include "stdlib.h"



int main(int argc, char* argv[])
{
    FILE *fp;
    char c;
    char s[20];
    //char *a[2];
    //a[0]= "C:\\Users\\samni\\Desktop\\test\\a.txt";
    if (argc != 2)
    {
        printf("Error format,Usage: display filename1\n");
        return 0; //键入了错误的命令行，结束程序的执行
    }
    //if ((fp = fopen("C:\\Users\\samni\\Desktop\\test\\a.txt", "r")) == NULL)
    //if ((fp = fopen(a[0], "r")) == NULL)
    if ((fp = fopen(argv[1], "r")) == NULL)
    {
        printf("error!this file can not open\n");
    }
    else
    {
        fgets(s,20,fp);
        //printf("%c\n", c);
        printf("%s\n", s);
        printf("succsed!\n");
    }
    fclose(fp);
    system("pause");


    //printf("%d\n",argc);
    //printf("%s\n",argv[0]);
    //printf("%s\n", argv[1]);
    //system("pause");
    return 0;
}