Question

The logic of the program is quite clear but when it asks the user to enter name. The second time it asks for the name i.e at i=1 it asks for the name and also asks for the year to be entered. In short its not allowing to the user to enter data after i=0 in int year.

/* Write a program to take input name roll number and year of joining of 5 students and making a function which prints name of only those who have joined in the particular year mentioned by the user*/
#include<stdio.h>
#include<conio.h>
struct student
{
   char name[50];
   int year;

}
a[5];

void func ( void );
void main ( void )
{
   int i;
   for ( i = 0; i < 5; i++ )
   {
      printf ( "Enter name %d\n", i + 1 );
      gets ( a[i].name );
      puts ( "Enter year" );

      scanf ( "%d", &a[i].year );
   }
   func(); 
   getch();
}
void func ( void )
{
   int i;
   int yearr;
   printf ( "Enter a year:" );
   scanf ( "%d", &yearr );
   for ( i = 0; i < 5; i++ )
   {
      if ( yearr == a[i].year )
      {
         printf ( "%s", a[i].name );
      }// if ends

   }//for ends
}// func ends

Answer 1

Clear the input buffer before taking input using fflush(stdin) or fflushall(). Your modified code is given below.

/* Write a program to take input name roll number and year of joining of 5 students and making a function which prints name of only those who have joined in the particular year mentioned by the user*/
    #include<stdio.h>
    #include<conio.h>
    struct student
    {
       char name[50];
       int year;

    }
    a[5];

    void func ( void );
    void main ( void )
    {
       int i;
       for ( i = 0; i < 5; i++ )
       {
          printf ( "Enter name %d\n", i + 1 );
          fflush(stdin);
          gets ( a[i].name );
          puts ( "Enter year" );

          scanf ( "%d", &a[i].year );
       }
       func(); 
       getch();
    }
    void func ( void )
    {
       int i;
       int yearr;
       printf ( "Enter a year:" );
       scanf ( "%d", &yearr );
       for ( i = 0; i < 5; i++ )
       {
          if ( yearr == a[i].year )
          {
             printf ( "%s", a[i].name );
          }// if ends

       }//for ends
    }// func ends