#include "stdio.h"
#define STR_LEN 10

int read_line(char str[], int n);

main()
{
    int i, n;
    char str[STR_LEN+1];
    n = read_line(str, STR_LEN+1);
    for(i = 0; i <= n; i++)
    {
        printf("%c", str[i]);   
    }
    printf("asd\n");
    puts(str);
    printf("asd\n");
}

int read_line(char str[], int n)
{
    int i = 0;
    char ch;
   
    while((ch = getchar()) != '\n')
      if(i < n - 1)
        str[i++] = ch;
    str[i] = '\0';
   
    return i;
}

[ 本帖最后由 我爱吃青菜 于 2015-3-29 21:22 编辑 ]

#include "stdio.h"
#define STR_LEN 10

int read_line(char str[], int n);

main()
{
    int i, n;
    char str[STR_LEN+1];
    n = read_line(str, STR_LEN+1);
    for(i = 0; i <= n; i++)
    {
        printf("%c", str[i]);   
    }
    printf("asd\n");
    puts(str);
    printf("asd\n");
}

int read_line(char str[], int n)
{
    int i = 0;
    char ch;
   
    while((ch = getchar()) != '\n')
      if(i < n - 1)
        str[i++] = ch;
    str[i] = '\0';
   
    return i;
}




复制错了，应该是这个！！！！！！

刚学，不知这个道理，多谢指教~~