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Needs help in loop
Posted on 2011-02-23
Hi guys: Can any one please tell me what i make mistake as it prints the table only first time also it dont terminate the loop when i press the minus sign. Thanks.
#include <iostream>
using namespace std;
int main()
{
int multiplicand = 0;
int product = 0;
int multiplier = 0;
cout << "Multiplicand (negative number to end):";
cin >> multiplicand;
do
{
do
{
multiplier +=1;
product = multiplicand * multiplier;
cout << multiplicand << " * " << multiplier << " = " << product << endl;
} while(multiplier < 10);
cout << endl ;
cout << "Multiplicand (negative number to end) :";
cin >> multiplicand;
} while(multiplicand >=0);
cout << endl;
cout << "Multiplicand (negtative number to end):";
cin >> multiplicand;
system("Pause");
return 0;
}
#include <iostream>
using namespace std;
int main()
{
int multiplicand = 0;
int product = 0;
int multiplier = 0;
cout << "Multiplicand (negative number to end):";
cin >> multiplicand;
do
{
do
{
multiplier +=1;
product = multiplicand * multiplier;
cout << multiplicand << " * " << multiplier << " = " << product << endl;
} while(multiplier < 10);
cout << endl ;
cout << "Multiplicand (negative number to end) :";
cin >> multiplicand;
} while(multiplicand >=0);
cout << endl;
cout << "Multiplicand (negtative number to end):";
cin >> multiplicand;
system("Pause");
return 0;
}
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10 Comments
Like this
#include <iostream>
using namespace std;
int main()
{
int multiplicand = 0;
int product = 0;
cout << "Multiplicand (negative number to end):";
cin >> multiplicand;
do
{
int multiplier = 0;
do
{
multiplier +=1;
product = multiplicand * multiplier;
cout << multiplicand << " * " << multiplier << " = " << product << endl;
} while(multiplier < 10);
cout << endl ;
cout << "Multiplicand (negative number to end) :";
cin >> multiplicand;
} while(multiplicand >=0);
cout << endl;
cout << "Multiplicand (negtative number to end):";
cin >> multiplicand;
system("Pause");
return 0;
}
Thanks yes i figure it out but still a problem when i press the minus sign the program wont terminate
The loop terminates for me when I enter a negative number.
(then it asks me for one more number before the program ends)
If I just press a minus sign without entering a number it will keep looking for a number and never find one.
(then it asks me for one more number before the program ends)
If I just press a minus sign without entering a number it will keep looking for a number and never find one.
If you want it to end if you press something other than a number,
one way to do that could be to set multiplicand to something that is not >=0
before doing cin >> multiplicand
so that if it fails to find a number to >> into multiplicand, it will still have a value that ends the loop.
one way to do that could be to set multiplicand to something that is not >=0
before doing cin >> multiplicand
so that if it fails to find a number to >> into multiplicand, it will still have a value that ends the loop.
Is there a reason you aren't using "for" loops instead of "do/while"?
Do/While will cause you much grief. The problem with do/while is that the loop body is executed BEFORE the test. The "for" loop does the test at the top of the loop, which is what you want.
You should redo your code to use "for" instead of "do/while". You cannot get it working right with do/while.
Do/While will cause you much grief. The problem with do/while is that the loop body is executed BEFORE the test. The "for" loop does the test at the top of the loop, which is what you want.
You should redo your code to use "for" instead of "do/while". You cannot get it working right with do/while.
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