Question

C Program:
Write a program that will read names, ids, dept names, and cgpа of some students from a file and will show the results. Consider that the name of the file is 'input.csv'. It is just a text file where each line holds information of one student. Example format of two lines in the file is as follows: David Smith, 21, Computer Science, 3.98 Jone Smith, 11, Finance, 3.45 Read all information from the file, and print them on screen (one student per line). Your program should use the following structure to hold information of a student typedef struct char name [50]; int id; char dept [20]; double cgpa; } student;

Answer 1

here we take file name as input_csv.txt. It is considered as text file.

here on output screen one line gives one record of individual student.

/* PROGRAM */

#include <stdio.h>
#include <stdlib.h>
#include<string.h>
#include<iostream>
#include <bits/stdc++.h>
using namespace std;
typedef struct
{
   char name[50];
   int id;
   char dept[20];
   double cgpa;
  
}student;
  
int main()
{
FILE *fptr;
student std[100];
char s[80];
char rec[100][100];
double rec1[100][100];
char filename[100];
double d;
string s1;
   int i,j,n,l,c=0,k=0,p,x,m=0,r,h=0,u=0;
c=0;
   i=0;
   k=0;
fptr = fopen("input_csv.txt", "r");
if (fptr == NULL)
{
printf("Cannot open file \n");
exit(0);
}
  
while(fgets(s,1000,fptr)!=NULL)
{
    m=0;
    u=0;
    m=0;
    h=0;
    s1="";
    k=0;
    c=0;
   l=strlen(s);
   i=0;
   
    while(i<l)
   {
       if(s[i]==',')
       {
       while(k<c)
       {
       s1=s1+s[k];
       k++;  
       }  
  
   if(m==1)
       {
           rec1[u][0]=atoi(s1.c_str());
           u++;
       }
   else    strcpy(rec[m], s1.c_str());
  
   m++;
            
      
   p=0;
  
       i++;
       k++;
       c++;
       s1="";
      
       }
       else if(i==l-1)
       {
       while(k<=c)
       {
       s1=s1+s[k];
       k++;  
       }
         
         
   if(m==3)
       {
      
       rec1[u][0]=atof(s1.c_str());
           u++;
       }
   else    strcpy(rec[m], s1.c_str());
  
   m++;
  
   p=0;
       i++;
       k++;
       c++;
       s1='\0';
       }  
       else
       {
       i++;
       c++;
      
       }
   }
  
strcpy(std[h].name,rec[0]);
std[h].id=rec1[0][0];
strcpy(std[h].dept,rec[2]);
std[h].cgpa=rec1[1][0];

printf("%s %d %s %0.2f\n",std[h].name,std[h].id,std[h].dept,std[h].cgpa);
  
   
}

fclose(fptr);

}

SCREEN SHOT

#include <stdio.h> #include <stdlib.h> #include<string.h> #include<iostream> #include <bits/stdc++.h> using namespace std; typedef struct char name[50]; int id; char dept[20]; double cgpa; }student; int main() FILE *fptr; student std[100]; char [80]; char rec[100][100]; double rec1[100][100]; char filename[100]; double d; string s1; int i, j,n,1,C=0,k=0, p,X,m=0,r, h=0, u=0; C= ; i=0; k= ; fptr = fopen("input_csv.txt", "r"); if (fptr == NULL) printf("Cannot open file \n"); exit();

while(fgets(5,1000, fptr)!=NULL) m= ; u=0; ni=0; h=0; $1="" k= ; C= ; 1=strlen(s); i=0; while(i<l) if(s[i]==',') while(k<c) s1=51+5[k]; k++; if (m==1) rec1[u][@]=atoi(s1.c_str(); u++; else strcpy(rec[m], s1.c_str();

p=0; i++; s1=""; else if (i==1-1) while(k<=c) s1=51+s[k]; k++; if (m==3) rec1[u][@]=atof(s1.c_str(); ++; else strcpy(rec[m], s1.c_str()); p=0; sl='\0';

else i++; C++; strcpy(std[h]-name, rec[@]); std[h].id=rec1[@][@]; strcpy(std[h].dept,rec[2]); std[h] .cgpa-rec1[1][@]; printf("%s %d %s %0.2f\n", std[h].name, std[h].id, std[h].dept, std[h].cgpa); fclose(fptr);

when file is

LOX input_csv - Notepad File Edit Format View Help David Smith, 21, Computer Science, 3.98 John Smith, 11, Finance, 3.45

OUTPUT

- 10 x C:\Users\cse\Desktop\CHEGG\file_struct.exe David Smith 21 Computer Science 3.98 John Smith 11 Finance 3.45 Process exited after 0.02501 seconds with return value o Press any key to continue - - - - comment and was actum unde

when file is:

- OX input_csv - Notepad File Edit Format View Help David Smith, 21, Computer Science, 3.98 John Smith, 11, Finance, 3.45 Devid Morison, 14, Electrical Engineering, 4.68

Output

LOX C:\Users\cse\Desktop\CHEGG\file_struct.exe David Smith 21 Computer Science 3.98 John Smith 11 Finance 3.45 Devid Morison 14 Electrical Engineering 4.68 - - ---------- ------- --------- -- Process exited after 0.01656 seconds with return value o Press any key to continue - - - -