C File Handling Programs 15

Question:28
Write a C program to read a file line by line, display lines which are starting with ‘a’ or ‘A’.

Note:
The above program can be modified to display lines starting from any character
Sol:

#include<stdio.h>
#include<conio.h>
#include<string.h>
int main()
{
   FILE *fp;
   char buff[255];
   fp = fopen("test11.txt", "r");
   if(fp==NULL)
   {
   	printf("Unable to open the file\n");
   	return(0);
   }
   while(1)
   {

     fgets(buff, 255,fp); //reads  line by line
    if(feof(fp))
   {
     printf("\n\n\nend of file");
     break;
   }
   if(buff[0]=='a' || buff[0]=='A')
     printf("%s\n", buff );
   }
   fclose(fp);
   getch();
   return(0);
}

Question:29
Write a C program to read a file line by line, display lines which are starting with vowels (aeiouAEIOU)

Note:
The above program can be modified to display lines starting from any character
Sol:

#include<stdio.h>
#include<conio.h>
#include<string.h>
int main()
{
   FILE *fp;
   char buff[255];
   fp = fopen("test11.txt", "r");
   if(fp==NULL)
   {
   	printf("Unable to open the file\n");
   	return(0);
   }
   while(1)
   {

     fgets(buff, 255,fp); //reads  line by line
    if(feof(fp))
   {
     printf("\n\n\nend of file");
     break;
   }
   if(buff[0]=='a' || buff[0]=='A' || buff[0]=='e' || buff[0]=='E' || buff[0]=='i' || 
   buff[0]=='I' || buff[0]=='o' || buff[0]=='O' || buff[0]=='u' || buff[0]=='U')
     printf("%s\n", buff );
   }
   fclose(fp);
   getch();
   return(0);
}

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