Random Numbers Help - C And C++ | Dream.In.Code

Example

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5 Replies - 63 Views - Last Post: Yesterday, 06:43 PM Rate Topic:

#1 makeitloud ?

Reputation: 0

• Posts: 52
• Joined: 08-April 13

Posted Yesterday, 12:57 PM

hello guys, i have a question. in this test program im making it does so if you get a problem wrong it re does the question, but it generates the same number, is their a way to generate a different number?

#include <iostream> #include <string> #include <ctime> using namespace std;  int main() { 	srand (time(NULL));  	int grade, operands[2], userAnswer;  	string quiz, name;  	char answer, again;  	cout << "What is your name?\n"; 	cin >> name; 	cout << "Were going to take a quiz, are you ready? <y/n>\n"; 	cin >> answer; 	if(answer == 'y' || answer == 'Y') 	{ 	cout << "Ok lets get started " << name << endl; 		cout << "First lets do a math problem.\n"; 		operands[0] = rand()%50; 		operands[1] = rand()%20; 		 		do 		{ 		cout << "What is " << operands[0] << " + " << operands[1] << " ?\n"; 		cin >> userAnswer; 		 	if(userAnswer==operands[0] + operands[1]) 	{ 		cout << "You got the Problem right, off to the next question\n"; 	} 	else 		{ 		cout << "Problem incorrect\n"; 		cout << "Would you like to try again?\n"; 		cin >> again; 		} 		}while(again == 'y' || again == 'Y'); 		 	} 	 	 	  	system("pause"); 	return 0; }

Is This A Good Question/Topic? 0

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Replies To: random numbers help

#2 CTphpnwb ?

Reputation: 2473

• Posts: 8,475
• Joined: 08-August 08

Re: random numbers help

Posted Yesterday, 01:12 PM

Have you tried putting your "if" statement inside the do ... while loop instead of enclosing it?

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#3 makeitloud ?

Reputation: 0

• Posts: 52
• Joined: 08-April 13

Re: random numbers help

Posted Yesterday, 01:15 PM

i dont understand what you are saying.

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#4 CTphpnwb ?

Reputation: 2473

• Posts: 8,475
• Joined: 08-August 08

Re: random numbers help

Posted Yesterday, 01:23 PM

Think about it.

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#5 makeitloud ?

Reputation: 0

• Posts: 52
• Joined: 08-April 13

Re: random numbers help

Posted Yesterday, 05:32 PM

do 	{ 	if(answer == 'y' || answer == 'Y') 	{ 	cout << "Ok lets get started " << name << endl; 		cout << "First lets do a math problem.\n"; 		operands[0] = rand()%50; 		operands[1] = rand()%20; 		/*******************first question********************************/ 		 		 		cout << "What is " << operands[0] << " + " << operands[1] << " ?\n"; 		cin >> userAnswer; 		 	if(userAnswer==operands[0] + operands[1]) 	{ 		cout << "You got the Problem right, off to the next question\n"; 		system("cls"); 		 	} 	else 		{ 		cout << "Problem incorrect\n"; 		cout << "Would you like to try again?\n"; 		cin >> again; 		} 		}while(again == 'y' || again == 'Y');

was this what you were talking about

also on

char again;   

im getting a run time error on it saying it is no initialized and i cant find the reason behind it. if you no anything about that. thank you

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#6 #define ?

Reputation: 936

• Posts: 3,268
• Joined: 19-February 09

Re: random numbers help

Posted Yesterday, 06:43 PM

You could have a function for the math problem, and another to check whether to go again.

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