In regards to the last program, trying to get it to quit going intoan inevitable

Question

In regards to the last program, trying to get it to quit going intoan inevitable loop when something other then a number is entered.For instance, I entered the letter A, and it sent it for atailspin.

Explanation / Answer

x.P5lor="red">please rate - thanks why are you allowing a negative numerator and not a negative denominator? it's the same difference if you were entering just 1 character it could be done with a cin.clear() cin.ignore(100,' '); but because your not, you must read the data as characters (I used a string) and then convert it to a number get back to me if any problems #include #include #include #include using namespace std; //prototype of the functions bool getnum(int&); char menu(); void addFractions( int a1, int b1, int a2, int b2, int & num, int & den ); void subtractFractions( int a1, int b1, int a2, int b2, int & num, int & den ); void multiplyFractions( int a1, int b1, int a2, int b2, int & num, int & den ); void divideFractions( int a1, int b1, int a2, int b2, int & num, int & den ); int main() // function main begins program execution { int a1, b1, a2, b2, num, den, exit; bool good1=false,good2=false,num1found=false,num2found=false,inputerror; char ch = menu(); while (ch!='X') { //Try block checks for input validation //throws if exception occured do { try      {if(!good1)       {if(!num1found)           {// prompt and read the input from the user           cout > a1;           inputerror=getnum(a1);           if(inputerror)                { string s="valid number not entered";                 throw s;                 }           num1found=true;           }          // prompt and read the input from the user      cout > b1;     inputerror=getnum(b1);           if(inputerror)                { string s="valid number not entered";                 throw s;                 }      // validate the denominator      if ( b1 == 0 )         throw b1;      else if (b1 a2;           inputerror=getnum(a2);           if(inputerror)                { string s="valid number not entered";                 throw s;                 }           num2found=true;           }      // prompt and read input from the user      cout > b2;      inputerror=getnum(b2);           if(inputerror)                { string s="valid number not entered";                 throw s;                 }         // validate the denominator      if ( b2 == 0 )         throw b2;      else if (b2

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