#include <stdio.h>
        #include <string.h>
        struct student_details{
            int e_num, adm_year, marks[5][5],fees_clear;
            char name[100];
        };

        struct student_details sd[10];


        void init_student(struct student_details *pt)
        {
            int j;
            char opt;
            printf("Enter name of the student: ");
            gets((*pt).name);
            printf("Enter enrollment no. :");
            scanf("%d",&(*pt).e_num);
            printf("Enter year of admission: ");
            scanf("%d",&(*pt).adm_year);
            for(j=0;j<5;j++)
            {
                printf("Enter course(%d) code and marks obtained:",j+1);
                scanf("%d %d",&(*pt).marks[j][0],&(*pt).marks[j][1]);
            }
            printf("Is all the fees cleared: (Y/N)");
            scanf("%c",&opt);
            if(opt=='y'||opt=='Y')
                (*pt).fees_clear = 1;
            else
                (*pt).fees_clear = 0;
        }

        void write_dat(struct student_details *pt)
        {
            FILE *fp;
            fp = fopen("details.dat",'ab');
            const char *mytxt = ("Name:%s Enrollment no. :%d Year of admission:%d, Course code and marks obtained: %d-%d: %d-d: %d-%d: %d-%d: %d-%d , Clearance of Feed(1 is Yes|0 is No): %d",(*pt).name,(*pt).e_num,(*pt).adm_year,&(*pt).marks[0][0],&(*pt).marks[0][1],&(*pt).marks[1][0],&(*pt).marks[1][1],&(*pt).marks[2][0],&(*pt).marks[2][1],&(*pt).marks[3][0],&(*pt).marks[3][1],&(*pt).marks[4][0],&(*pt).marks[4][1],(*pt).fees_clear);
            if(fp)
            {
                fwrite(mytxt,sizeof(char),strlen(mytxt),fp);
                fclose(fp);
            }
        }


        int main()
        {
            int i;
            for(i=0; i<10; i++)
                init_student(&sd[i]);
            for(i=0;i<10;i++)
                write_dat(&sd[i]);
            return 0;
        }