Help with a little calculator program :/

[somenewfool]

Here is what I have thus far:

http://www.text-upload.com/read.php?id=314581&c=3847000

Basically I want it to add the first two parameters when the third parameter is a.
and I want it to multiply the first two numbers when the third parameter is m.
I plan on adding the other mathematical operations later.

for example, if I enter in:
3 4 a

It should give me 7, but nothing is working D:
Please help!

[S G H]

if(argv[3]="a")
Your mistake?
You are using '=' to check equality.
= assigns "a" to argv[3].
It should be ==.
Same to its else if(...
It so becomes...
if(argv[3]=="a")
But then what? It's not a std::string. It will check if their pointers are equal, which is almost always wrong.
So you should use strcmp.
This is the result:
if(!strcmp(argv[3],"a"))
Remember: Use that '!' before strcmp. strcmp returns 0 if two strings (char *) are equal.
P.S., don't use system("pause"); , your program will be recognized as a virus. Use getch(); instead.

[somenewfool]

Thanks a bunch!!!

I'm not entirely sure what strcmp does, but thanks anyway!

[S G H]

It means StringCompare. It checks if two strings are equal to another.
But if the strings are equal, it returns 0, and so you need the ! symbol to check if they are equal.

[somenewfool]

Thanks heaps!!!!!!

[S G H]

Don't worry. What you did was my very first mistake at C++.

[somenewfool]

Say I wanted to raise a number to the power of another, so I enter
2 4 p

in the parameters box, is there a simple way to do this, or will it require a for loop of some description?

[S G H]

Parameters box? Sorry?

[somenewfool]

Execute>Parameters
I'm using wxdev
Sorry for my bad c++ lingo

I think the other name for it is the command line,
like if I entered:
2 5 p

How would I make it do:
2^5

[S G H]

// In the includes:
#include <math.h>
// Then use cout << pow(2,5);