For your first question... this is kinda a tricky question, you'll have to elaborate a bit more on what you want to do.
Well, for your second question, I'd probably get aorund it by just scanning straignt into the string array...And for your code, please use code tags, instead of quote tags. Code preserves spacing, and uses standard-width font, which makes code much easier to read in it.Code:for (count=0; count!=16; count++) { printf("\nPlease enter the %d interface name >",count); scanf("%s", interface_array[count]); }