// // main.cpp // CST116-ch.5 debugging-Davis // // Levi Davis // // 1) On the lines indicated in the code below, insert a breakpoint. // 2) With the program not in debugging mode, start debugging by // using the "Step Into" tool. // 3) Click on the Watch1 tab. // 4) With the cursor in the Name column type money and press enter. // This adds a programmer defined watch on the variable money. // 5) Step Into until you reach the first cout statement. With // the current line being that cout statement, Step Into again. // 6) What happened? it jumped back to the breakpoint/wouldn't run. Where are we now? the breakpoint. What is all of this nasty // looking code? an error code? // 7) Remember, stepping into a predefined routine takes you to the // code for that routine. If the debugger can't find the code it // will show the assembly code for that routine. // 8) How do we get out of this mess? Use the "Step Out" tool. // 9) In Visual Studio you will be taken back to the same cout // statement. Use the Step Over tool to take you to the next // line. // 10) Step over the next cout statement. Now look at the console // window. What was printed? Enter percent raise? // 11) Select Stop Debugging either from the Debug menu or from your // toolbar. //* Debugging Exercise 2 // // 1) With the program stopped, run to Breakpoint 1 by selecting // the Start Debugging menu option, toolbar icon or press F5. //2) Step over the cout. // 3) Step over the cin. Notice that you can now enter a value. // 4) Enter the value .1 and press enter. // 5) Notice that the current line of execution is now at the // calculation. // 6) Look at your watch. What is the value of money? 123.449997 // 7) Hover your mouse pointer over raise. What is its value? 0.100000001 // 8) Step over the calculation. Notice the watch on money is now // red. This designates that the variable just changed its value. // 9) What happened to our money? nothing? // I thought a raise was supposed // to increase our money? Stop debugging and fix the calculation. #include #include using std::cout; using std::cin; using std::endl; int main() { float money = 123.45F; float raise; cout << "You have $"; cout << money << endl; cout << "Enter percent raise: "; cin >> raise; money = money * raise; cout << "After your raise you have $"; cout << money << endl; return 0; }