Question

I am trying to write C programming code and output will be as below

Output Example: Marks Analyzer V3.0####### Enter student id and marks (e.g. 12345 89.5): 12345 55.55 Enter student id and marks (e.g. 12345 89.5): 23456 66.66 Enter student id and marks (e.g. 12345 89.5): 34567 77.77 Enter student id and marks (e.g. 12345 89.5): 45678 88.88 Enter student id and marks (e.g. 12345 89.5): 99999 -1 1.12345, 55.55 2.23456, 66.66 3.34567, 77.77 4.45678, 88.88 result of marks analysis average: 72.22, highest marks: 88.88, lowest marks: 55.55

but I donno how to get the result analysis part.

help me to add the 2nd part with my code:

here is my code below:

#include <stdio.h>
#define MAX 100
struct studentMarkVariable{
int id;
float marks;
};

void getData(struct studentMarkVariable arrs[]);
void show(struct studentMarkVariable arrs[]);

int main()
{
printf ("####### Marks Analyzer V3.0 ####### \n");
      struct studentMarkVariable arrs[MAX];
    getData(arrs);
    show(arrs);
return 0;
}

void show( struct studentMarkVariable arrs[]){
int count=0;
do
    {
        if (arrs[count].id!= -1 && arrs[count].marks != -1){
printf("%d. %d, %.2f\n",count+1,arrs[count].id , arrs[count].marks);}
else return;
count++;
}while(count<5);

}

void getData( struct studentMarkVariable arrs[]){
    int count=0;

do
{
printf("Enter student id and marks (eg. 12345 89.5):");
int checker1;
float checker2;
scanf("%d",&checker1);
if (checker1 != -1){
    (arrs[count].id)=checker1;
}
else{
   arrs[count].id= -1;
   return;

}
scanf("%f",&checker2);
if (checker2 != -1){
    (arrs[count].marks)= checker2;

}
else { arrs[count].marks= -1;
        return;}
count++;
}while(count<5);

}

Answer 1

Program:

#include <stdio.h>
#define MAX 100

//struct to define id and marks
struct studentMarkVariable
{
   int id;
   float marks;
};

//function prototypes
void getData(struct studentMarkVariable arrs[]);
void show(struct studentMarkVariable arrs[]);

int main()
{
    printf ("####### Marks Analyzer V3.0 ####### \n");
struct studentMarkVariable arrs[MAX];
  
//call the method that read data from user
getData(arrs);
  
//method that shows analysis
show(arrs);
   
   return 0;
}

//function that takes stict array as parameter and displays thae analysis
void show( struct studentMarkVariable arrs[])
{
   float sum=0, avg, lowestmarks=0,highestmarks=0;
  
   int count=0;
   do
   {
       //if the id and marks are not -1
   if (arrs[count].id!= -1 && arrs[count].marks != -1)
       {
           //print the id and marks
           printf("%d. %d, %.2f\n",count+1,arrs[count].id , arrs[count].marks);
          
           //get the sum of marks of all the students
           sum = sum+arrs[count].marks;
          
           //if the marks are of 1st student set lowest and highes as marks of 1st student
           if(count==0)
           {
               highestmarks=arrs[count].marks;
               lowestmarks=arrs[count].marks;
           }
           else
           {
               //compare highestmarks with each students marks and get the highestmarks
               if(arrs[count].marks>highestmarks)
                   highestmarks=arrs[count].marks;
                  
               //compare lowestmarks with each students marks and get the lowestmarks
               if(arrs[count].marks<lowestmarks)
                   lowestmarks=arrs[count].marks;
           }
       }
  
       count++;
      
   }while(count<5);
  
   //calculate average
   avg=sum/(count-1);
  
   //dispaly results
   printf ("\n### result of marks analysis ### \n");
   printf("average: %.2f, highest marks: %.2f, lowest marks: %.2f",avg,highestmarks,lowestmarks);
}

//method that read students details into structure array
void getData( struct studentMarkVariable arrs[])
{
   int count=0;
   do
   {
       printf("Enter student id and marks (eg. 12345 89.5):");
       int checker1;
       float checker2;
       //read the id, add into array if it is not -1
       scanf("%d",&checker1);
       if (checker1 != -1)
       {
       (arrs[count].id)=checker1;
       }
       //if -1 is entered exit loop
       else
       {
       arrs[count].id= -1;
       return;
       }
      
       //read the marks, add into array if it is not -1
       scanf("%f",&checker2);
       if (checker2 != -1)
       {
       (arrs[count].marks)= checker2;
       }
       //if -1 is entered exit loop
       else
       {
           arrs[count].marks= -1;
   return;
       }
       count++;
   }while(count<5);
}

Outptut: