Newbie here

[metalheadrenzo]

Hey guys, I'm new here. Do you mind telling me if this code below me a executable program. Since I don't have any software yet that can execute a C++ codes, I just want to post this here. Leave me hints for me to figure out the flaw of the code below me. Thanks

#include<stdio.h>
int main ( )
{
int numyrs;
float intrst;
printf("Input variable");
scanf("%f", &numyrs);

if (numyrs>=5)
printf (".045");

else if ((numyrs<5) && (numyrs>=4))
printf("0.4");

else if ((numyrs<4) && (numyrs>=3))
printf("0.35");

else if ((numyrs<3) && (numyrs>=2))
printf("0.3");

else if ((numyrs<2) && (numyrs>=1))
printf(".025");

else (numyrs<1)
printf(".02");

return 0;
}

[firedraco]

It is...but there is a problem in it.

[metalheadrenzo]

can you tell me?

[mspy2plus]

think about your scanf. . . then think about the variable that you scanned.
Also, Why do you have two variables?

[screw]

instead of

scanf("%f", &numyrs);

try the

scanf("%d", &numyrs);

[Nsanden]

Heya!

I'm a beginner myself so maybe i don't see it but why would you write for example:
else if ((numyrs<5) && (numyrs>=4))
when it's exactly the same thing as:
else if (numyrs == 4)

[chrisname]

Yes but Nsanden, that number is a floating point number meaning it is allowed a decimal point. So it could be 4.0 - 4.9, which would still be more than or equal to four, but less than five.

My mistake, numyrs is an integer. I think the error is not with the scanf but with the declaration of numyrs.

gcc numyrs.cpp -lstdc++ -o numyrs g++ numyrs.cpp -o numyrs
This compiles ok:

#include <cstdio> // Files in the stl do not have .h extensions, e.g. iostream or fstream. stdio.h is a C header, so it is prepended with a c, e.g. cstdlib or cmath.

int main () {
    float numyrs;
    // float intrst; this is never used
    printf("Input variable\n");
    scanf("%f", &numyrs);

    if (numyrs >= 5)
        printf (".045");

    else if (numyrs < 5 && numyrs >= 4) // numyrs between 4.0 and 4.9 (inclusive)
        printf("0.4");

    else if (numyrs < 4 && numyrs >= 3)
        printf("0.35");

    else if (numyrs <3 && numyrs >= 2)
        printf("0.3");

    else if (numyrs < 2 && numyrs >= 1)
        printf(".025");

    else // (numyrs<1) <-- this isn't an else if statement, with it you get compile errors.
        printf(".02");
    printf("\n"); // Print a newline

return 0;
}

Also, I tested it and does work.

[Cojones]

Guess what, you can get yourself a copy of Microsoft VC++ Express Edition for free. Here's a link http://www.microsoft.com/express/vc/ This way you will be able to test code without posting it here and ask some other guys to test it for you.

[chrisname]

Good idea, install some proprietary software that requires you to sign up to a mailing list to use for more than a month, isn't standards-compliant, is severely bloated and takes ages to install and configure.

Or you can download gcc or MinGW and a text editor, or just download an IDE...

Codeblocks is good imo.

[firedraco]

Uhhh, VC++ is fine. I did not have to sign up for a mailing list, it wasn't hard to configure at all. In fact, I didn't really have to change anything.

Plus you get a great debugger with it. And if you want to go into Win32 development, it's quite handy.

Also, what about it exactly isn't standards complaint? I haven't found anything abnormal about it...

[chrisname]

It conforms to Microsoft standards. But thinking about it any compiler will if you make a win32 GUI.

It's not difficult to configure, but when you first run it, it spends ages configuring itself.

The GUI, while very nice, is just that - eye candy. And its cluttered.

But my issue with it is mainly how resource hungry and bloated it is.

I'll give, the debugger is good, but I still don't see the point in saying 'Get this.' Rather than post a few options with a footnote saying that you think x is the best. But to just roll out the MS IDE, when you don't even know what platform the other person is running.
Anyway, never mind.

[metalheadrenzo]

Thanks a lot guys. Much appreciated. Really