argv switch checking

[haggismn]

Hi everyone,
I am writing a program which plays morse code, using the system speaker, for linux. I have the program almost working, however I have one problem, which I can't quite solve. When comparing the contents of argv[i], the provided comparison never matches. I believe this is because the argument also has an invisible character attached

for(int i=1;i<argc;i++)
	{if ((argv[i]=="-dl")||(argv[i]=="--dashlength"))
				{dashlen=atoi(argv[i+1]);}
	if ((argv[i]=="-Df")||(argv[i]=="--dotfreq"))
					{dotfreq=atoi(argv[i+1]);}
	if ((argv[i]=="-df")||(argv[i]=="--dashfreq"))
				{dashfreq=atoi(argv[i+1]);}}

This is a small part of the code. Itcode compiles fine, but it won't work. In the meantime, I have used strstr to find the string in argv, and it works fine, however this is not pedantic enough. This is a simple problem, I know, but I have spent hours trying to figure it out. What should I add?

Thanks in advance!

[filipe]

Same issue here: http://www.cplusplus.com/forum/beginner/35344/

[haggismn]

Thanks.
Apologies for not searching the forum first.