zoukankan      html  css  js  c++  java
  • C语言读取文件并存入到一个数组

    Example   
      /*   FSCANF.C:   This   program   writes   formatted   
        *   data   to   a   file.   It   then   uses   fscanf   to   
        *   read   the   various   data   back   from   the   file.   
        */   
         
      #include   <stdio.h>   
         
      FILE   *stream;   
         
      void   main(   void   )   
      {   
            long   l;   
            float   fp;   
            char   s[81];   
            char   c;   
         
            stream   =   fopen(   "fscanf.out",   "w+"   );   
            if(   stream   ==   NULL   )   
                  printf(   "The   file   fscanf.out   was   not   opened\n"   );   
            else   
            {   
                  fprintf(   stream,   "%s   %ld   %f%c",   "a-string",     
                                    65000,   3.14159,   'x'   );   
         
                  /*   Set   pointer   to   beginning   of   file:   */   
                  fseek(   stream,   0L,   SEEK_SET   );   
         
                  /*   Read   data   back   from   file:   */   
                  fscanf(   stream,   "%s",   s   );   
                  fscanf(   stream,   "%ld",   &l   );   
         
                  fscanf(   stream,   "%f",   &fp   );   
                  fscanf(   stream,   "%c",   &c   );   
         
                  /*   Output   data   read:   */   
                  printf(   "%s\n",   s   );   
                  printf(   "%ld\n",   l   );   
                  printf(   "%f\n",   fp   );   
                  printf(   "%c\n",   c   );   
         
                  fclose(   stream   );   
            }   
      }  
    void main(void)
    {
        FILE *fp = fopen("arr.txt", "rb");
    
        int num;
    
        while(!feof(fp))
       {
           fscanf(fp,"%d",&num);
           printf("%d ",num); 
       }
       fclose(fp);
    }
    
    

     

  • 相关阅读:
    组合模式
    过滤器模式
    桥接模式
    适配器模式
    原型模式
    建造者模式
    抽象工厂
    工厂方法
    静态工厂
    单例模式
  • 原文地址:https://www.cnblogs.com/zhoususheng/p/2959108.html
Copyright © 2011-2022 走看看