STUDENT DIRECTORY

• Problem Description

  
  Write a program to create a directory of students with roll numbers.The program
  should display the roll number for a specified name and vice-versa
  
  Refer Sample Input and Output:
  1. The total number of inputs from the user
  2. The user should get the input of registration number and name for the number of inputs in Step 1
  3. The third input corresponds to the registration number

• CODING ARENA::

• #include <stdio.h>

  int main()

  {

    int n;

    scanf("%d",&n);

    int i,a[n];

    char b[n][100];

    for(i=0;i<n;i++)

    {

      scanf("%d%s",&a[i],b[i]);

    }

    int k;

    scanf("%d",&k);

    for(i=0;i<n;i++)

    {

      if(a[i]==k)

      {k=i;break;}

    }

    printf("Name=%s\nregno=%d",b[k],a[k]);

  
  

  return 0;

  }

• Test Case 1

  
  Input (stdin)

  5
  
  101 Rajesh
  
  102 Suresh
  
  103 Mahesh
  
  104 Sharma
  
  105 Rohit
  
  102
  
  

  Expected Output

  Name=Suresh
  
  regno=102

• Test Case 2

  
  Input (stdin)

  3
  
  101 Rajesh
  
  102 Suresh
  
  103 Mahesh
  
  103
  
  

  Expected Output

  Name=Mahesh
  
  regno=103