Thread: New C learner need help on a syntax question

Lookup atoi or strtol for converting the command line strings into numbers.
Lookup fopen for opening a file.
Lookup fprintf for writing to a file.

Feel free to post your code if you want more in depth help.

Command-line input will be accessible in the program as argv[1], argv[2], argv[3], argv[4] containing "mult", "2", "3", "abc.txt" respectively. As long as these parameters are separated by spaces and contain no spaces themselves there is no syntax problem.

Originally Posted by nonoob

Command-line input will be accessible in the program as argv[1], argv[2], argv[3], argv[4] containing "mult", "2", "3", "abc.txt" respectively. As long as these parameters are separated by spaces and contain no spaces themselves there is no syntax problem.

Actually that would be argv[0], argv[1], argv[2] and argv[3] ... I'm betting mult is the program name.

You may be right. He did mention "mult" is program name. I was hoping increased flexibility would allow use of "mult", "add", "subtract" etc., towards a more general calculator. I also got confused with the mention of cmd.exe - as if that could be his program. I realize it's also the name the command processor.

Originally Posted by nonoob

You may be right. He did mention "mult" is program name. I was hoping increased flexibility would allow use of "mult", "add", "subtract" etc., towards a more general calculator. I also got confused with the mention of cmd.exe - as if that could be his program. I realize it's also the name the command processor.

Ahhh man... I've had days like that, too ... bummer