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  • c语言输入输出

    #include "stdio.h"
    int main()
    {
     FILE *fp;
     int ninzu=0;
     char name[100];
     double hsum=0.0;
     double wsum=0.0;
     double height;
     double weight;
     if((fp=fopen("C:\Users\USER\Desktop\abc.txt","r")==NULL))
      printf("a文件打开失败 ");
      else{
       
       while(fscanf(fp,"%s%lf%lf",name,&height,&weight)==3){
       printf("%10s %5.1f %5.1f ",name,height,weight);
       ninzu++;
       hsum +=height;
       wsum +=weight;   
       }
     printf("-------------------- ");
     printf("平均 %5.1f %5.1f",hsum/ninzu,wsum/ninzu);
     fclose(fp);
      }
      return 0;

    }

    #include "stdio.h"
    int main()
    {
     
     int ch;
     FILE *fp;
     char fname[64];
     printf("文件名:");
     scanf("%s",fname);
      if((fp=fopen(fname,"r"))==NULL)
     printf("文件打开失败");
     else{
      while((ch=fgetwc(fp))!=EOF )
      putchar(ch);
      fclose(fp);
     }

     
     
        return 0;
    }

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  • 原文地址:https://www.cnblogs.com/bluewelkin/p/3594156.html
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