Console.Read() and Console.ReadLine() problems [duplicate]

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This because you read a char.
Use appropriate methods like ReadInt32() that takes care of a correct conversion from the read symbol to the type you wish.

The reason why you get 49 is because it’s a char code of the ‘1’ symbol, and not it’s integer representation. 

char     code
0 :      48
1 :      49
2:       50
...
9:       57

for example: ReadInt32() can look like this: 

public static int ReadInt32(string value){
      int val = -1;
      if(!int.TryParse(value, out val))
          return -1;
      return val;
}

and use this like: 

int val = ReadInt32(Console.ReadLine());

It Would be really nice to have a possibility to create an extension method, but unfortunately it’s not possible to create extension method on static type and Console is a static type.

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