Retrieving Integers from an Array of Chars

Question

The program I am working is passed 3 command line arguments, all of which should be integers. the skeleton program that was provided has:

int main(char *argv[]){
...
}

What I have done the provided is just try to set an integer to the item in each position of the array (0, 1, & 2), but it won't compile since its trying to convert a char to an integer. I'm sure there is an easy fix for this, but I can't seem to figure it out.

Answer 1

Try the cstdlib function "atoi" for each argument:

char* to int conversion

Answer 2

Try something like this:

int i = atoi(argv[1]);

Answer 3

Since this looks like homework, I'll give you several of hints:

• Signature of main() includes an int argument, conventionally named argc
• The initial argument is argv[1], not argv[0]
• atoi is the easiest way to convert a string to an integer.