File Management in C

"FILE MANAGEMENT---CHAPTER NO. 7"

Question No. 3

#include<stdio.h>

#include<conio.h>

void main(void)

{

                clrscr();

                FILE *ptr;

                char ch;

                int lb=0,rb=0;

                if((ptr=fopen("ASSIGN3.cpp","r"))==NULL)

                {

                printf("Cannot Open the File!\n");

                }

                else

                {

                ptr=fopen("ASSIGN3.cpp","r");

                                while((ch=getc(ptr))!=EOF)

                                {

                                                if(ch=='{')

                                                {

                                                lb++;

                                                }

                                                if(ch=='}')

                                                {

                                                rb++;

                                                }

                                }

                                fclose(ptr);

                                printf("Left Braces = %d and Right Braces = %d\n",lb,rb);

                                if(lb==rb)

                                {

                                printf("Left Braces and Right Braces are Equal");

                                }

                                else

                                {

                                printf("Left Braces and Right Braces are Not Equal");

                                }

                }

                getch();

}

Question No. 4

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main(void)

{

                clrscr();

                FILE *ptr;

                char name[15];

                int eng,urdu,math,isl,pst,computer;

                ptr=fopen("Result.txt","w");

                for(int i=0;i<5;i++)

                {

                clrscr();

                printf("Enter name of Student = ");

                scanf("%s",&name);

                printf("Enter marks in English = ");

                scanf("%d",&eng);

                printf("Enter marks in Urdu = ");

                scanf("%d",&urdu);

                printf("Enter marks in Math = ");

                scanf("%d",&math);

                printf("Enter marks in Islamiat = ");

                scanf("%d",&isl);

                printf("Enter marks in Pak-Studies = ");

                scanf("%d",&pst);

                printf("Enter marks in Computer = ");

                scanf("%d",&computer);

                fprintf(ptr,"%s %d %d %d %d %d %d",name,eng,urdu,math,isl,pst,computer);

                fprintf(ptr,"\n");

                }

                fclose(ptr);

                clrscr();

                printf("File Successfully Created!");

                getch();

}

Question No. 5

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main(void)

{

                clrscr();

                FILE *ptr;

                char name[15];

                int eng,urdu,math,isl,pst,computer,total,avg;

                ptr=fopen("Result.txt","r");

                printf("Name\tEng\tUrdu\tMath\tIsl\tP.St\tComp\tTotal\tAverage\n");

                while(fscanf(ptr,"%s %d %d %d %d %d %d",&name,&eng,&urdu,&math,&isl,&pst,&computer)!=EOF)

                {

                total=avg=0;

                total=eng+urdu+math+isl+pst+computer;

                avg=total/6;

                printf("%s\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\n",name,eng,urdu,math,isl,pst,computer,total,avg);

                }

                fclose(ptr);

                getch();

}