Write a program in C. Write a program rle that uses a simple method to compress strings. rle takes a single argument and looks for repeated characters. Each repeated sequence of a letter or punctuation mark is reduced to a single character plus an integer indicating the number of times it occurs. Thus, aaa becomes a3 and ab becomes a1b1. If the compressed string is longer than the original string, rle must print the original string instead. If the input string contains digits, rle must print error and nothing else. Usage $ ./rle aaaaaa

a6

$ ./rle aaabcccc..a a3b1c4.2a1

$ ./rle aaabab

aaabab

$ ./rle a1b2

error