C# Loop MCQs

Question 1: What will be the output of the following program?

int i = 0;

for(;;)
{
    if (i < 5)
            Console.Write(i);
    else
        break;
	i++;
}

• 01234
• 12345
• Infinite loop
• Compile-time error

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Question 2: What will be the output of the following program?

for (double d = 1.01D; d < 1.05; d+= 0.01D)
{
    Console.Write("{0}, ", d);
}

• Compile-time error
• Runtime error
• 1.01, 1.02, 1.03, 1.04,
• 1, 1, 1, 1

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Question 3: What will be the output of the following program?

public static void Main()
{
	while (ProcessMessage());
}
	
static bool ProcessMessage() {
	Console.Write("Hello");
	return false;
}

• Compile-time error
• Runtime error
• Hello
• Blank output

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Question 4: What will be the output of the following program?

int i = 15;

for( ; ; )
{
    Console.Write("{0} ",i); 
    if (i >= -5)
        i -= 5; 
    else 
        break;
}

• Compile-time error
• Runtime error
• 15 10 5 0 -5
• 15 10 5 0 -5 -10

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Question 5: What will be the output of the following program?:

public static void Main(string[] args)
{
	string str = "Hello";
		
    for(int i = 0; i<str.Length; i++)
        Console.WriteLine(str[i]);
}

• No output
• Compile-time error
• Runtime error
• Hello

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