#include<stdio.h>
#include<string.h>
float avg(float);
main()
{
      FILE *p[2];
      int k,students=10,subjects=4,i,j,id_number,date_of_birth,fail=0;
      float marks[100],total=0,avg;
      char name[30],course_enrolled[30],filename[10];
      for(i=1;i<=2;i++)
           {
                printf("filename"); 
                scanf("%s",&filename);
                p[i]=fopen(filename,"w");
                printf("Enter Name of Student\n",p[i]);
                fscanf(stdin,"%s",&name,p[i]);
                printf("Enter Course In Which Student Is Enrolled\n",p[i]); 
                fscanf(stdin,"%s",&course_enrolled,p[i]);
                printf("Enter ID Number Of %s Enrolled in Course %s\n",name,course_enrolled,p[i]);
                fscanf(stdin,"%d",&id_number,p[i]);
                printf("Enter Date Of Birth Of %s Enrolled in Course %s and\n ID-Number is %d\n",name,course_enrolled,id_number,p[i]);
                fscanf(stdin,"%d",&date_of_birth,p[i]);
                for(j=1;j<=4;j++)
                     {
                     printf("Enter Marks for Subject %d for Student %s\n",j,name);
                     fscanf(stdin,"%f",&marks[j]);
                     total=total+marks[j];
                     if(marks[j]<50)
                     fail=fail+1;
                     else
                     continue;
                     }                                                                                
                     avg=(total/400)*100;
                     printf("AVERAGE=%f\n",avg);
                     if(avg>=70)
                     printf("Grade A\n");
                     if(avg>=60&avg<70)
                     printf("Grade B\n");
                     else if(avg>=50&avg<60)
                     printf("Grade C\n");
                     else if(avg>=45&avg<50)      
                     printf("Grade D\n");
                     else if(avg>=40&avg<45)
                     printf("Grade E\n");
                     else if(avg<40)
                     printf("Fail\n");
                     if(fail>=2)
                     printf("Student is failed and cann;t promote\n");
                     else
                     continue;
                     fclose (p[i]);                    
                }
           for(k=1;k<=2;k++)
           {
           printf("Input filename"); 
           scanf("%s",&filename);
           p[k]=fopen(filename,"r");
           fprintf(stdout,"NAME= %s\tCOURSE ENTITLLED= %s\t ID NUMBER= %d\t DATE OF BIRTH= %d\tAVERAGE= %f\n",name,course_enrolled,id_number,date_of_birth,avg);
           fclose (p[k]);
           }
           getch();
}

there is a problem i cann;t save all data in a single file as well as but cann;t use array of pointers in function to save records of 10 students

#include<stdio.h>
#include<string.h>
float avg(float);
main()
{
FILE *p[2];
int k,students=10,subjects=4,i,j,id_number,date_of_birth,fail=0;
float marks[100],total=0,avg;
char name[30],course_enrolled[30],filename[10];
for(i=1;i<=2;i++)
{
printf("filename"); 
scanf("%s",&filename);
p[i]=fopen(filename,"w");
printf("Enter Name of Student\n",p[i]);
fscanf(stdin,"%s",&name,p[i]);
printf("Enter Course In Which Student Is Enrolled\n",p[i]); 
fscanf(stdin,"%s",&course_enrolled,p[i]);
printf("Enter ID Number Of %s Enrolled in Course %s\n",name,course_enrolled,p[i]);
fscanf(stdin,"%d",&id_number,p[i]);
printf("Enter Date Of Birth Of %s Enrolled in Course %s and\n ID-Number is %d\n",name,course_enrolled,id_number,p[i]);
fscanf(stdin,"%d",&date_of_birth,p[i]);
for(j=1;j<=4;j++)
{
printf("Enter Marks for Subject %d for Student %s\n",j,name);
fscanf(stdin,"%f",&marks[j]);
total=total+marks[j];
if(marks[j]<50)
fail=fail+1;
else
continue;
} 
avg=(total/400)*100;
printf("AVERAGE=%f\n",avg);
if(avg>=70)
printf("Grade A\n");
if(avg>=60&avg<70)
printf("Grade B\n");
else if(avg>=50&avg<60)
printf("Grade C\n");
else if(avg>=45&avg<50) 
printf("Grade D\n");
else if(avg>=40&avg<45)
printf("Grade E\n");
else if(avg<40)
printf("Fail\n");
if(fail>=2)
printf("Student is failed and cann;t promote\n");
else
continue;
fclose (p[i]); 
}
for(k=1;k<=2;k++)
{
printf("Input filename"); 
scanf("%s",&filename);
p[k]=fopen(filename,"r");
fprintf(stdout,"NAME= %s\tCOURSE ENTITLLED= %s\t ID NUMBER= %d\t DATE OF BIRTH= %d\tAVERAGE= %f\n",name,course_enrolled,id_number,date_of_birth,avg);
fclose (p[k]);
}
getch();
}

At line nos. 10, 23 and 53 CHECK your for loops.

http://s3.supload.com/free/lastscan-20080710033716.jpg/view/

here u can see the program that i need. i am really tired of working on it.
1) There is some problem with average as it adds up average marks of last students with current one.

2) i cann;t save all records in a single file !

3) can anyone modify this code with according to the question ("up there on image link").

thanks guys for reply

Don't double post the problem in multiple threads because it only causes confusion. I'm closing this thread so that the discussion can continue in the other thread.

This article has been dead for over six months. Start a new discussion instead.