Make sure your code can be compiled with no error prior submission. Codes which

Question

Make sure your code can be compiled with no error prior submission. Codes which cannot be compiled will get 0 points. Write down a C program to collect the student's information and compute the average score of the class. The program should have following: Use structure for student's information. Structure should have the fields: student name, student id, student age and student score. Use pointers and dynamic memory allocation to allocate the space for the number of students entered by user. Write a function that should compute the average of the students score. Write down a C program that should copy the contents of an input file to a new file.

Explanation / Answer

problem 1

#include<stdio.h>
#include<conio.h>
   struct stdinfo
   {
       char name[20];
       int stdid, age, score;
   };

float cal_av(struct stdinfo b[], int n)
{
   int i,sum=0;
   float av;

   for(i=0;i<n;i++)
   {
       sum=sum+b[i].score;
   }
   av=sum/n;
   return av;
}

void main()
{

   struct stdinfo a[3];
   int i;
   float av;
   clrscr();
   for(i=0;i<3;i++)
   {
       printf("Enter name");
       scanf("%s",a[i].name);

       printf("Enter id");
       scanf("%d",&a[i].stdid);

       printf("Enter age");
       scanf("%d",&a[i].age);

       printf("Enter score");
       scanf("%d",&a[i].score);
   }

   av=cal_av(a,3);
   printf("Average of scores is %f",av);
   getch();
}

Problem 2

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

void main()
{
FILE *fp1, *fp2;
char ch;
clrscr();

fp1 = fopen("Sample.txt", "r");
fp2 = fopen("Output.txt", "w");

while (1)
{
ch = fgetc(fp1);

if (ch == EOF)
break;
else
putc(ch, fp2);
}

printf("File copied Successfully!");
fclose(fp1);
fclose(fp2);
}

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