Interview Questions

1) Write a For loop to display the values in a list ?

System.Collections.Generic.List<int>MyList; 
for (int mynumber = 0; mynumber < MyList.Length; mynumber++) 
{ 
    MessageBox.Show(MyList[mynumber]); 
} 

2) Write a For-Each loop to display the values in a list ?

System.Collections.Generic.List<int>MyList; 
foreach (int mynumber in MyList) 
{ 
    MessageBox.Show(mynumber); 
} 

3) Describe the 'return' statement and explain where it can be used ?
return - terminates execution of the method in which it appears and returns control to the calling method.

4) What is the difference between 'break' and 'continue' inside a for loop ?
break - breaks out of the loop completely.
continue - continues to execute the next iteration.

for (int i = 0; i < 10; i++) 
{ 
    if (i == 0) 
    { 
        continue; // the for-loop will jump to the next loop 
    } 
    DoSomeThing(i); 
    if (i == 5) 
    { 
        break;    // the for-loop with exit 
    } 
} 

5) Write a Switch statement to match against two conditions ?

switch (myNumber) 
{ 
   case < 10: 
      break; 
   case >= 10: 
      break; 
   default: 
      break; 
}