Equation printing program

[mattmao]

Is this your code or where did you get it from?

I used the gcc compiler to test it and found:

charlie$ gcc test.c
test.c: In function `main':
test.c:6: error: `cout' undeclared (first use in this function)
test.c:6: error: (Each undeclared identifier is reported only once
test.c:6: error: for each function it appears in.)
test.c:8: error: `cin' undeclared (first use in this function)
test.c:15: warning: assignment makes integer from pointer without a cast
test.c:21: warning: assignment makes integer from pointer without a cast
test.c:27: warning: assignment makes integer from pointer without a cast
test.c:33: warning: assignment makes integer from pointer without a cast
test.c:44:2: warning: no newline at end of file

Something is missing in your code.

[socondc22]

Is this your code or where did you get it from?

I used the gcc compiler to test it and found:

charlie$ gcc test.c
test.c: In function `main':
test.c:6: error: `cout' undeclared (first use in this function)
test.c:6: error: (Each undeclared identifier is reported only once
test.c:6: error: for each function it appears in.)
test.c:8: error: `cin' undeclared (first use in this function)
test.c:15: warning: assignment makes integer from pointer without a cast
test.c:21: warning: assignment makes integer from pointer without a cast
test.c:27: warning: assignment makes integer from pointer without a cast
test.c:33: warning: assignment makes integer from pointer without a cast
test.c:44:2: warning: no newline at end of file

Something is missing in your code.

I know im missing something i just cant figure out what??

[Benny the Guard]

Two things.

1) Put an extra newline at the end of your code. gcc annoyingly reports this although its not really a problem.

2) You need some includes here. cout is not part of the C++ language persay but rather part of the iostream package. So just put this at the top of your file:

#include <iostream>

[socondc22]

I really need some help to figure this out which is due tomorrow... so anyone that can help please send something

[socondc22]

Two things.

1) Put an extra newline at the end of your code. gcc annoyingly reports this although its not really a problem.

2) You need some includes here. cout is not part of the C++ language persay but rather part of the iostream package. So just put this at the top of your file:

#include <iostream>

i do have that at the top of my code i just didnt paste it in.... what line do i need to add to the bottom

[Benny the Guard]

The bottom is just hit enter one more time.

As for the other issues you may need:

using namespace std;

before the main function

[socondc22]

The bottom is just hit enter one more time.

As for the other issues you may need:

using namespace std;

before the main function

i have that too... let me give u my errors... im using emacs....

expected primary-expression before "char"
expected ';' before "char"
expected identifier before ';' token
expected identifier before ')' token.... and the continues for three more of them

[socondc22]

Anyone else with any ideas... i need help!!!

[Benny the Guard]

Oh ok, confused by the other list of errors. Three issues I found when compiling this:

1. The symbol 'operator' is reserved and cannot be used as a variable name. So this trips up the code. Just rename it and all the places you use it.

2. The operator '=' you use in your if statements are assignment operators not the comparison operator, which is '=='. So the code you have is trying to assign a new value to the variable.

3. In your if statments you are comparing a char to a string. The "+" means a string but since your variable is a single character you want '+'

Fix these up and the code should compile for you.

[socondc22]

Oh ok, confused by the other list of errors. Three issues I found when compiling this:

1. The symbol 'operator' is reserved and cannot be used as a variable name. So this trips up the code. Just rename it and all the places you use it.

2. The operator '=' you use in your if statements are assignment operators not the comparison operator, which is '=='. So the code you have is trying to assign a new value to the variable.

3. In your if statments you are comparing a char to a string. The "+" means a string but since your variable is a single character you want '+'

Fix these up and the code should compile for you.

the last thing i have to ask is that if i want to ask the user whether or not he wants to rerun the program... how do i do that... i just want to have him have to enter like y to run again or any other key to exit...

[Benny the Guard]

You can't rerun the program per day. What you want is to do a loop in your program to rerun the code you have. An example of this would be:

char rerun_choice = 'c';

while (rerun_choice == 'y')
  {
  cout << "continue? ";
  cin >> rerun_choice;
  }

In this code as long as the user hits y <enter> they will be asked again and again. Any other letter and it exits the loop. Actually the better approach here would be a do while loop. Similar to above but the while part is at the bottom, so it runs once regardless of the check. Lookup in your C manual on how to use, its a nice C feature.

[socondc22]

You can't rerun the program per day. What you want is to do a loop in your program to rerun the code you have. An example of this would be:

char rerun_choice = 'c';

while (rerun_choice == 'y')
  {
  cout << "continue? ";
  cin >> rerun_choice;
  }

In this code as long as the user hits y <enter> they will be asked again and again. Any other letter and it exits the loop. Actually the better approach here would be a do while loop. Similar to above but the while part is at the bottom, so it runs once regardless of the check. Lookup in your C manual on how to use, its a nice C feature.

the only thing that this did was ask if i wanted to continue... it didnt rerun the whole program... also everytime i try anything other than addition it still adds...

[Benny the Guard]

You need to put you code in this while loop. Anything in the while loop will be executed. So put the while loop around the code you already had.

[socondc22]

You need to put you code in this while loop. Anything in the while loop will be executed. So put the while loop around the code you already had.

i put it in and its exited my program no matter what i put in.

[Benny the Guard]

Post your current code again. I must have missed something.