The C standard library provides numerous built-in functions that your program can call. For example, strcat() to concatenate two strings, memcpy() to copy one memory location to another location, and many more functions. A function can also be referred as a method or a sub-routine or a procedure, etc.
Quick Answer. Authors use repetition for several reasons, including making a point, to set a rhythm, link topics or ideas and to make discussions easier to follow. Using repetition in writing is something that still has rules and should be used with some thought instead of randomly.
Repetition (pattern) Introduction: Definition: Repeating visual elements such as line, color, shape, texture, value or image tends to unify the total effect of a work of art as well as create rhythm. Repetition can take the form of an exact duplication (pattern), a near duplication, or duplication with variety.