scanf() is the formatted input function among these choices. It reads input according to specified conversion formats.
Programming in C MCQ - In-built Functions
getchar() reads a character from input. The other listed items perform output or other operations rather than this character-input task.
The presentation associates getchar() with , the standard input/output header.
putchar() outputs a single character. It is therefore the appropriate choice for one-character-at-a-time output.
According to the presentation, putch() is used to print alphanumeric character data. This answer follows the terminology used in the source material.
