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example of jagged array of storing student rollno and marks

example of jagged array of storing student rollno and marks

Ravi Vishwakarma938 05-Jul-2021

using System;

class HelloWorld

{

  static void Main ()

  {

    string[][]student_detail = new string[2][];

    for (int i = 0; i < student_detail.Length; i++)

      {

 student_detail[i] = new string[6];

 //Console.WriteLine('student '+student_detail[i].GetLength(0));

      }

    for (int i = 0; i < student_detail.Length; i++)

      {

 Console.WriteLine ('Enter ' + (i + 1) + ' student roll no :');

 student_detail[i][0] = Console.ReadLine ();

 for (int j = 1; j < student_detail[i].GetLength (0); j++)

   {

     Console.WriteLine ('Enter ' + j + ' marks of ' + (i + 1) +

          ' student :');

     student_detail[i][j] = Console.ReadLine ();

   }

      }

    Console.WriteLine ('Roll No \t Marks \n');

    for (int i = 0; i < student_detail.Length; i++)

      {

 Console.Write (student_detail[i][0] + '\t');

 for (int j = 1; j < student_detail[i].GetLength (0); j++)

   {

     Console.Write (student_detail[i][j] + ' ');

   }

 Console.WriteLine ('');

      }

    Console.WriteLine('If you want to search marks of student then press for yes = 'y' or no = 'n' ');

    string yes_no = Console.ReadLine ();

    while (yes_no.Equals ('y'))

      {

          bool exist_val=false;

          Console.WriteLine('Enter student rollno :');

            string search = Console.ReadLine ();

 for (int i = 0; i < student_detail.Length; i++)

   {

     if(search.Equals(student_detail[i][0]))

     {

         Console.Write ('\tMarks \t');

         for (int j = 1; j < student_detail[i].GetLength (0); j++)

         {

          Console.Write (student_detail[i][j] + ' ');

         }

         Console.WriteLine ('');

         exist_val=true;

         break;

     }else{

         exist_val=false;

     }

   }

    if(!exist_val)

        Console.WriteLine('this student roll no doesn't exits ..... ');

 Console.WriteLine('If you want to search marks of student then press for yes = 'y' or no = 'n' ');

 yes_no = Console.ReadLine ();

      }

    Console.WriteLine ('\n\nThanks for using....');

  }

}


Output - 

Enter 1 student roll no :

123

Enter 1 marks of 1 student :

45

Enter 2 marks of 1 student :

56

Enter 3 marks of 1 student :

58

Enter 4 marks of 1 student :

75

Enter 5 marks of 1 student :

59

Enter 2 student roll no :

124

Enter 1 marks of 2 student :

45

Enter 2 marks of 2 student :

78

Enter 3 marks of 2 student :

95

Enter 4 marks of 2 student :

56

Enter 5 marks of 2 student :

78

Roll No Marks

123 45 56 58 75 59

124 45 78 95 56 78

If you want to search marks of student then press for yes = 'y' or no = 'n'

y

Enter student rollno :

125

this student roll no doesn't exits .....

If you want to search marks of student then press for yes = 'y' or no = 'n'

y

Enter student rollno :

123

 Marks 45 56 58 75 59

If you want to search marks of student then press for yes = 'y' or no = 'n'

y

Enter student rollno :

124

 Marks 45 78 95 56 78

If you want to search marks of student then press for yes = 'y' or no = 'n'

y

Enter student rollno :

125

this student roll no doesn't exits .....

If you want to search marks of student then press for yes = 'y' or no = 'n'

n

Thanks for using....




Hi, my self Ravi Vishwakarma. I have completed my studies at SPICBB Varanasi. now I completed MCA with 76% form Veer Bahadur Singh Purvanchal University Jaunpur.

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