Code:#include <iostream> #include <cmath> using namespace std; void math() { char line; float number; float answer; char yn = 'y'; do{ cout<<"enter what you want to do (m for math, o for math operations, s for square root, f for farenheit to celsius, c for celsius to farenheit)\n"; cin>>line; if(line == 'o'){ cout<<"x,/,+,-,^,s(press enter then enter the number)\n"; answer = 0; } if(line == 's'){ cout<<"enter a number: "; cin>>number; answer = sqrt(number); } if(line == 'm'){ float x; float y; char a; float answer; cout<<"enter a problem\n"; cin>>x>>a>>y; switch (a){ case 'x': answer = x*y; break; case '/': answer = x/y; break; case '+': answer = x+y; break; case '-': answer = x-y; break; case '^': answer = pow (x,y); break; } } if(line == 'c'){ float degrees; cout<<"enter degrees celsius\n"; cin>> degrees; answer = 1.8*degrees+32; } if(line == 'f'){ float degrees; cout<<"enter degrees farenheit\n"; cin>> degrees; answer = (degrees-32)*1.8; } cout<<answer<<endl; cout<<"Do you want to calculate something else<y/n>\n"; cin>>yn; }while(yn == 'y'); }my problem is when you do an equation (x,/,+,-,^) it gives you an error or the previous number, and this only happens when you press m at the beginning, no where else.Code:#include <iostream> #include "calc.h" using namespace std; int main() { math(); }