如何在不重复读取的第一个字符的情况下从C中的文件中读取？ [英] How do I read from files in C without repeating the first character in reading ?

问题描述

如何在不重复读取第一个字符的情况下读取c中的文件？



我尝试过的方法：

  #include   <   stdio.h  >  
   #include   <   stdlib.h  >  
  
  int  main（）
 {
  char  course_name [ 20  ]。 
  int  number_of_student; 
  double  courses_average_grade; 
  int  i; 
 FILE *  in ; 
 
  in  = fopen（  course_info.txt，  r）; 
 
  for （i =  0 ; i< 20; i ++）{
 fscanf（ in ， ％s％d ％LF，&安培; COURSE_NAME [I]，&安培; number_of_student，&安培; courses_average_grade）; 
 printf（ ％s \ t％d \ t％.2f \ n，COURSE_NAME，number_of_student，courses_average_grade）; 
} 
 
  return   0 ; 
} 

解决方案

我认为你的 fscanf（）语句应该没有[i]：

 fscanf（in，％s％d％lf，& course_name，& number_of_student，& courses_average_grade）; 

course_name 和& course_name [i] 是仅当 i 为零时才相同!!!

所以写入fscanf也只需 course_name ...

how can i read from files in c without repeating the first character in reading ?

What I have tried:

#include <stdio.h>
#include <stdlib.h>

int main()
{
    char course_name[20];
    int number_of_student;
    double courses_average_grade;
    int i;
    FILE *in;

    in=fopen("course_info.txt","r");

    for(i=0;i<20;i++) {
        fscanf(in,"%s %d %lf",&course_name[i],&number_of_student,&courses_average_grade);
        printf("%s \t %d \t %.2f \n",course_name,number_of_student,courses_average_grade);
    }

    return 0;
}

解决方案

I think your fscanf() statement should be without [i]:

fscanf(in,"%s %d %lf",&course_name,&number_of_student,&courses_average_grade);

course_name and &course_name[i] are the same only if i is zero!!!
So write in fscanf also course_name only...

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