Executing binary files using exec* in c

Question

I am creating a toy shell. I want to execute a binary file which is either located in the PATH variable or the current directory. This is what I am doing to achieve it:

execl(filePath," -e ",com.arguments,NULL);  //e.g of filePath: /home/dino/programs/mywrapper

Now it works fine for some executables like which command. But for commands like tar , a whole bunch of error throws up.

Basically all I want is the execl to execute the executable mentioned in filePath in my shell. How do I do it?

EDIT: com.arguments is the arguments list. For example in which bash , bash becomes my argument. In tar -zvcf bazinga.tar.gz bazinga/ , -zvcf bazinga.tar.gz bazinga/ becomes my arguments etc.

Answer 1

From execl 's documentation

 The first argument, by convention, should point to the
filename associated with the file being executed.