program for SEQUENTIAL algoritham using c-languge

SEQUENTIAL ALGORITHM

#include <stdio.h>

struct file

{

 int regno,marks1,marks2,marks3;

char name[10];

};

main()

{

 FILE *fp;

float avg;

int i,n,total;

struct file x[30];

clrscr();

printf("Enter no. of students: ");

scanf("%d", &n);

fp=fopen("Student.txt","w");

printf("input student list data \n\n");

for(i=1;i<=n;i++)

{

printf("Reg.N0           Name  Marks1            Marks2            Marks3\n");

fscanf(stdin,"%d%s%d%d%d",&x[i].regno,x[i].name,

                                    &x[i].marks1,&x[i].marks2,&x[i].marks3);

fprintf(fp,"%d\t%s\t%d\t%d\t%d\t\n",x[i].regno,

                                    x[i].name,x[i].marks1,x[i].marks2,x[i].marks3);

}

fclose(fp);

fprintf(stdout,"\n\n");

fp=fopen("student.txt","r");

printf("Regno Name  Marks1            Marks2            Marks3            Total   Avg\n");

for(i=1;i<=n;i++)

{

total= x[i].marks1+x[i].marks2+x[i].marks3;

avg=(float)total/3;

printf("%d\t%s\t%d\t%d\t%d\t%d\t%f\n",x[i].regno,x[i].name,x[i].marks1,

                 x[i].marks2,x[i].marks3,total,avg);

}

fclose(fp);

getch();

}