I'm writing a program that displays all the info in an array. It has to start with the array index in brackets (e.g. [2]) and they have to be right aligned with each other.
if it was just the number, I know that you can do:
printf("%-10d", index); but putting brackets around that would give the following output
[ 1] [ 2] ... [ 10] [ 11] when I really want it to be:
[1] [2] ... [10] [11] How do I go about doing this?
Do it in two steps: first build a non-aligned string in a temporary buffer, then print the string right-aligned.
char buf[sizeof(index) * (CHAR_BITS + 2) / 3 + 4]; sprintf(buf, "[%d]", index); printf("%-12s", buf); 
One easy thing to do would be to break it down to a two step process:
char tmp[128]; sprintf(tmp, "[%d]", index); printf("%-10s", tmp); you need only one line and no temporary char-buffer:
printf("%*s[%d]\n",12-(int)log10(index),"",index); 
