Its a simple program i know But??

[andy bee]

I use Turbo C++.
Please can you compile and put right this program.
Not sure if it's me or my compiler thanks.

#include <stdio.h>

int main(int count, char *strings[]) {
char *p1, *p2;
int i = 0;

if(count != 3) {
printf("Usage: alpha <start char> <end char>\n");
exit(-1);
}

if(*strings[1] < 65 || *strings[1] > 90 || *strings[2] < 65
|| *strings[2] > 90 || *strings[2] < *strings[1]) {
printf("Please input uppercase characters from A-Z, with the ");
printf("second one coming after the first one alphabetically.");
printf("\n");
exit(-1);
}

p1 = (char *)malloc(1);
p2 = (char *)malloc(1);

memcpy(p1, strings[1], sizeof(char));
memcpy(p2, strings[2], sizeof(char));

while((*p1 + i) <= *p2){
printf("%c", (*p1 + i));
i++;
}

printf("\n");
}

[Salteh]

hmmz, I added these 3 header files & it "worked". It was a bit of trial & error
(need to learn this again).


#include <malloc.h>
#include <memory.h>
#include <stdlib.h> // for the exit function..
#include <stdio.h>

and I also added a "return 0;" before the last '}', so main now returns a value

-->

exit()
The function exit() is prototyped in #include <stdlib> by:

void exit(int status)

[EDIT]using MSVC++ 6.0 btw[EEk!-EDIT]

[Salem]

I only needed stdlib.h (it contains malloc as well as exit)

[Salem]

> still stops befoe it supposed to ask for input letters.
Because you're supposed to type the letters on the command line when you run the program

Eg.
a.exe B F

Produces this output
BCDEF

There is no input when the program is running - if it's not on the command line, the program just exits.

[andy bee]

All i get when I run is inactive in viewer window, in otherwords I press run and the program halts with:

Usage:alpha <Start Char> <End Char>.
Can't do anything but watch it on screen.
Am I cracking up

Is there a way Someone could change it so the user inputs the letters??
Can't get my head around it.
Thanks

[Salem]

If you're running this within some IDE, then there is usually some "Run options" menu which allows you to specify the command line parameters you want to pass to the program.

[andy bee]

Ok guys i have now got the code to work as it should.
Thanks for your valuable help.
(Learn sumut new every day).