Question

Write c program. Do part 4 and 5

CH-12 TEXT FILES SE 12-3 Create a text file named grade.txt that you type yourself by your Each record in grade.txt should have the following format: by Columns 1-4 6-8 number of a student A grade out of 100 EYERCISE 12-4 Write a program that will read the identification numbers of students and their letter grades (A, B, C, D, or F) from the keyboard and store them in a text file named letter.txt. Continue to input until user enters-999 for the identification num- ber. Each record in letter.txt should have the following format: Columns 1-4 Identification number of a student A letter grade 165 C Programming Problem Book/ATILIM-2016 CH-12 TEXT FILES EXERCISE 12-5 Consider the files grade. txt and letter.txt crated in tho 3 and 4 respectively. Write a program that will read these two files line by identfication numbers on the corresponding lines are the same, write it result.txt. The result.txt will have the following format: lerce two files wnite it to another tile r of lir numiz.t ofnumz. txt line and if the to another EXERCISE dentification number of a student A grade A leter grade 1-4 6-8 10 C Programming Problem Book/ATILIM-2016

Answer 1

12-4 :

#include<stdio.h>
#include<stdlib.h>
int main()
{
   int n;
   char a;
FILE *fp;
fp = fopen("letter.txt","w");

if(fp == NULL)
{
printf("error");   
exit(1);   
}
fprintf(fp,"identification number\tGrade\n");
while(n!=-999)
{
printf("Enter identification number: ");
scanf("%d",&n);

fprintf(fp,"%d\t",num);
printf("Enter Grade: ");
scanf("%c",&a);

fprintf(fp,"%c\n",a);
}
fclose(fp);

return 0;
}

12-5:

#include <stdio.h>
#include <stdlib.h>

int main()
{
FILE *fp1, *fp2, *fresult;
f1 = fopen("grade.txt", "r");
f2 = fopen("letter.txt", "r");

if(f1 == NULL || f2 == NULL)
{
perror("error..!!");
exit(0);
}

fresult = fopen("result.txt", "w");

if(fresult == NULL)
{
perror("error..!! ");
exit(0);
}

while((c=fgetc(f1)) ==fgetc(f2) && c!=EOF )
fputc(c,fresult);

fclose(f1);
fclose(f2);
fclose(fresult);

return 0;
}