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Use Repetitive sentences to explain this code by ( For or While or Do While)using namespace std; #include<iostream> #include<math.h> main() float OH_Vinegar-pow(10, -12); float OH_Soap=pow(10,-2); //OH


amend the code by use with any of the loop :
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Answer #1

By "amend", I'm guessing you need to repeatedly display the menu till user exits. You can use a do while loop in that case with the help of a switch statement. Something like -

  #include <iostream> #include <math.h> using namespace std; int main() { float OH_Vinegar = pow(10, -12); float OH_Soap = pow(10, -12); float OH_Water = pow(10, -12); float OH_Blood = pow(10, -12); float OH_Milk = pow(10, -12); float H_Vinegar, H_Soap, H_Water, H_Blood, H_Milk, pH; int Choice; do{ cout<<"\n================================================\n"; cout<<"Welcome to pH calculator\n"; cout<<"================================================\n"; cout<<"To calculate the concentration of H+ ions choose one of the following substances:\n 1-Vinegar \n 2-Soap \n 3-Water \n 4-Blood \n 5-Milk \n 6-Exit\n"; cin>>Choice; //Do your work as per the chosen alternative //do your required work here: //I've used switch in this case, which is probably what you want to do. switch(Choice){ case 1: cout<<"\nYou chose 1-Vinegar"; break; case 2: cout<<"You chose 2-Soap"; break; case 3: cout<<"You chose 3-Water"; break; case 4: cout<<"You chose 4-Blood"; break; case 5: cout<<"You chose 5-Milk"; break; case 6: exit(0); } }while(Choice != 6); return 0; }

And take a look at the output:

=============================== Welcome to pH calculator To calculate the concentration of H+ ions choose one of the followin

As soon as we enter 6, the program stops. So you always need to include such an option to exit the executin flow.

The sole purpose I used a Do-While loop, rather than for/while loop is that it will execute at least once, no matter what the user wants to do.

Hope it helps. Best of Luck!!

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