help debugging program

Change that line to

if (yes_no == "Yes")

you could also use the good old strcmp

#include <iostream.h>
#include <string.h>

main()
{
char patient_name[40] = "";
cout << "What is your child's full name? ";
cin >> patient_name;
cout << "Does" << patient_name << "have a fever? ";

char yes_no[5] = "";

cout << "Does the patient have a temperature?( Yes or No )\n";
cin >> yes_no;

if (strcmp(yes_no,"Yes")==0) //This is (16,13)
{
cout << " Does the patient have a cough?\n";
}
else
{
cout << " Is the patient conscious?\n";
}

return 0;
}

Yeah i guess you are right

the char strings kind of pushed me in that thinking direction i guess :D

Okay I have another question. Should I group each illness in its own little if strings? Because if you type no for sneezing (at the end of the program) it asks if there is swelling of the salivary glands. I know that i have if you answer no to sneezing to say that, but my symptoms keep running into eachother and it's like a BIG jigsaw puzzle. I can't figure out how to get it to where the diagnoses won't run into eachother and ask the wrong questions.
I dont know if I explained myself clearly, so if you have a question about my question (LOL) tell me.

Thanks

#include <iostream>
#include <string>
using namespace std;
main()
{
string patient_name;
cout << "What is your child's full name? ";
cin >> patient_name;

int wait;
string yes_no;

cout << "Does " << patient_name<<" have fever? ( Yes or No ) ";
cin >> yes_no;

if (yes_no == "Yes" || yes_no == "yes")
{
cout << "Does " << patient_name<<" have a headache? ";
cin >> yes_no;
}
else
{
cout << "Does " << patient_name<<" have a cough? ";
cin >> yes_no;
}

if (yes_no == "Yes" || yes_no == "yes")
{
cout << "Does " << patient_name<<" have a sore throat? ";
cin >> yes_no;
}
else
{
cout << "Does " << patient_name<<" have a runny nose? ";
cin >> yes_no;
}
if (yes_no == "Yes" || yes_no == "yes")
{
cout << "Is "<< patient_name<<" sneezing? ";
cin >> yes_no;
}
else
{
cout << "Not finished this one yet";
cin >> yes_no;
}
if (yes_no == "No" || yes_no == "no")
{
cout << "Does " <<patient_name << " have painful swelling of the salivary glands? ";
cin >> yes_no;
if (yes_no == "Yes" || yes_no == "yes")
cout << patient_name << " has the mumps.";
}

if (yes_no == "Yes" || yes_no == "yes")
{
cout << "Does " << patient_name << " have a red rash spreading from the ears and forehead to the rest of the body? ";
cin >> yes_no;
if (yes_no == "Yes" || yes_no == "yes")
cout << patient_name << " has the measles.";
}

cin >> wait;
return 0;
}

I have all of the commonalities sorted out like:

Fever:
mumps, measles, chicken pox, bronchitis, influenza, strep throat, middle ear infection

Headache:
mumps, strep throat, strep throat

etc.

Is that what you meant by sorting it? Or would you sort it a different way?

I forgot my Computer Science book at school, but I will look up how to use the Boolean variable because we didn't study that yet.
Thanks

Boolean variables are used as follows:

bool a, b;
a=true; // true is a keyword
b=false; // false is also a keyword
//bools are always either true or false
if(a && b)
{
...
}
bool c=(a||b);//c is initialized to true
//etc.

they are pretty straightforward (their use is not limited to the above operations but that is all you will need).

What I meant by map it out is like this (this is just one example):
1. Does patient exhibit symptom a? yes-go to 2, no- go to 3.
2. Does patient exhibit symptom b? yes-go to 4, no- go to 5.
3. Does patient exhibit symptom c? yes- patient has disease 1, no- patient has disease 2.
4. Does patient exhibit symptom d? yes- patient has disease 3, no- patient has disease 4.
5. Does patient exhibit symptom e? yes- patient has disease 5, no- patient has disease 6.

OR - you could ask each symptom and then determine the illness:
1. Does patient exhibit symptom a?
2. Does patient exhibit symptom b?
3. Does patient exhibit symptom c?
4. Does patient exhibit symptom d?
5. Does patient exhibit symptom e?
6. if(a&&b&&c&&d&&!e) patient has disease 1.
7. if(a&&!b&&!c&&d&&!e) patient has disease 2.
8. if(!a&&b&&c&&!d&&e) patient has disease 3.
9. if(!a&&!b&&c&&d&&!e) patient has disease 4.
10. if(!a&&!b&&!c&&!d&&!e) patient has no disease.

You have to decide what you want your program flow to be before you start to code the questioning process.