### need help with my c++ hw, if else statements

so basically my if and else statement isn't working for me. when i try to put in "us" when it ask for my unit system, it'll skip to "press any key to continue" and i pretty much don't know what im messing up on.

 ``` // This program is to approximate a vehicle's speed before it gets into an accident. #include #include #include using namespace std; int main() { // ***************************** variables char answer; double vf; double c; double ds; double f; double vi; double vi2; double v; #define c1 12.96 #define g1 9.81 #define c2 .4649 #define g2 32.2 // ******************** commands cout << "is the unit system in metric or U.S. customary units? \ntype in M for metric or US for U.S. customary units: "; cin >> answer; if (answer == 'm' || answer == 'M') { cout << "Type in the estimated speed at impact:"; cin>> vf; cout << "Type in the skid mark distance:"; cin>> ds; cout << "Type in the road's coefficient of friction:"; cin>> f; // ******************* formulas v = (vf*vf); vi = sqrt(v+2*c1*ds*g1*f); vi2 = sqrt(v+2*c2*ds*g2*f); cout << setprecision(2) << fixed; cout << "The traveling speed of the car is: "<< vi << " km/hr" << endl; } // ********************** us metric system output else if(answer == 'us' || answer =='US') { cout << "Type in the estimated speed at impact:"; cin>> vf; cout << "Type in the skid mark distance:"; cin>> ds; cout << "Type in the road's coefficient of friction:"; cin>> f; cout << setprecision(2) << fixed; cout << "The traveling speeed of the car is: "<< vi2 << " mi/hr" << endl; } system("pause"); return 0; } ```
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Without looking too closely (there may be more problems), `answer` is a `char`, which can hold one character. Change it to a `std::string` and change all your string constants to use "double quotes", not 'single' (single are for single-character constants).

Cheers,
Jim
actually i lied, i got it now. THANK YOU SO MUCH JIM!
Last edited on
Can you repost your code with your changes in, and include the exact error message you're getting?

Jim
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