StudentManagement

#include <stdio.h>
#include <string.h>
#include <malloc.h>

struct student{
    char name[50];
    int rollNo;
    float marks[5];
    float totalMarks;
    float per;
    char result[15];
}*p, *s;

void printStars(int n){
    int i=0;
    for(i=0;i<n;i++)
        printf("*");
}

main()
{
      int nStudents,nSubjects;
      char **subNames;

      const int NO_OF_STARS = 29;
      int i,j,l=0;
      //clrscr();

      printStars(NO_OF_STARS);
      printf("\nSTUDENT MANAGEMENT SYSTEM\n");
      printStars(NO_OF_STARS);

      printf("\nEnter the no. of students : ");
      scanf("%d",&nStudents);

      p=malloc(nStudents * sizeof(struct student));
      //p=(struct student*)malloc(nStudents * sizeof(struct student));

      s=p;

      printf("\nEnter no. of Subjects : ");
      scanf("%d",&nSubjects);

      subNames = malloc(nSubjects *  sizeof(char*));

      for(i=0;i<nSubjects;i++){

        subNames[i] =  malloc(sizeof(char) * (15 + 1));
        printf("\nEnter Subject %d name : ",i+1);
        //fflush(stdin);
        scanf(" %s",subNames[i]);
      }

      printf("\n\n");
      printStars(NO_OF_STARS);
      printf("\nEnter Students Information\n");
      printStars(NO_OF_STARS);

      for(i=0;i<nStudents;i++)
      {
          printf("\nStudent %d details:",i+1);
          printf("\nRoll no. : ");
          scanf("%d",&p->rollNo);
          printf("\nName : ");
          scanf("%d",&p->name);

          p-> totalMarks=0;
          l=0;

          for(j=0;j<nSubjects;j++)
          {
            printf("%s Marks : ",subNames[j]);
            scanf("%f",&p->marks[j]);
            p->totalMarks+=p->marks[j];
            //printf("Value of marks is : %f",p->marks[j]);
            if(p->marks[j] < 35)
                l=1;
          }

          p->per = p-> totalMarks / nSubjects;

          if(l == 0){
              if(p->per >= 60)
                strcpy(p->result, "Distinction");
              else if(p->per < 60 && p->per >= 50 )
                strcpy(p->result, "First Class");
              else if(p->per < 50 && p->per >= 40 )
                strcpy(p->result, "Second Class");
              else if(p->per < 40 && p->per >= 35)
                strcpy(p->result, "Pass");
              else
                strcpy(p->result, "Fail");
          }else{
            strcpy(p->result,"FAIL");
          }
          p++;
       }

        printStars(NO_OF_STARS);
        printf("\nStudent Results\n");
        printStars(NO_OF_STARS);

        printf("%10d","Roll No.");
        printf("%20s","Name");

        printf("%15s","Total");
        printf("%20s","Per.");
        printf("%15s","Result");

        printStars(NO_OF_STARS);

       for(i=0;i<nStudents;i++)
       {
            //printf("\n%s\t%s",s->name,s->result);
            printf("%10s", s->rollNo);
            printf("%15s", s->name);

            for(j=0;j<nSubjects;j++){
                printf("%5d", s->marks[j]);
            }

            printf("%6d", s->totalMarks);
            printf("%6f", s->per);
            printf("%15s",s->result);

            s++;
       }


    printf("\n\n");
    printStars(NO_OF_STARS);
    printf("\nMaximum Marks\n");
    printStars(NO_OF_STARS);

    printf("%15s","Subject");
    printf("%10s","Roll No.");
    printf("%10s\n","Marks");

      for(i=0;i<nSubjects;i++){

        int highestMarks = 0;
        int stuId = 0;

        for(j=0;j<nStudents;j++){

            if(s->marks[i] > highestMarks){
                highestMarks = s->marks[i];
                stuId = j;
            }
        }
        /*
        printf("%15s",nSubjects[i]);
        printf("%10d", stuId);
        printf("%10d\n",highestMarks);
        */
      }

}