runs all ifs??? [*resloved*]

[john tindell]

if(argc>2)
{
if(argv[1]="open")
	{
		...
	}
	else if(argv[1]="new")
	{
		...
	}
}

when i enter in "cmdline.exe open c:\test.txt", it runs fine, when i run £cmdline.exe new c:\newtext.txt" it trys to open c:\newfile.txt? is this because im trying to use a string in the "if(argv[1] = ..." part??



Thanks

[Zaei]

You are using the assignment operator in the if statement. You MEANT ==.

Second, unless you converted your command line arguments to string objects in C++, you cant use the == operator to determine equality of the strings. Use the strcmp function instead.

Z.

[TupacShakur]

Maybe somethig like this:

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

int main(int argc, char * argv[])
{
char * Str1 = "open";
char * Str2 = "new";

if(argc > 2)
	{
	if(strcmp(argv[1], Str1) == 0)
		{
		//...
		}
	else if(strcmp(argv[1], Str2) == 0)
		{
		//...
		}
	else
		cout<<"Wrong usage."<<endl;
	}
else
	cout<<"Wrong usage."<<endl;

return 0;
}

Hope this helps.

[Zaei]

Yeah, though you dont have to store those strings before using them in the strcmp function... you can simply call it like so:

strcmp(argv[1], "new") == 0

Z.

[john tindell]

cheers thanks for the help

[parksie]

<iostream> not <iostream.h>.