putchar() vs printf() - Is there a difference?
c, getchar, printf, putchar
Solution
`printf` is a generic printing function that works with 100 different format specifiers and prints the proper result string. `putchar`, well, puts a character to the screen. That also means that it's probably much faster.
Back to the question: use `putchar` to print a single character. Again, it's probably much faster.
Problem
I am currently in chapter 1.5.1 File copying and made a program like so: ``` #include <stdio.h> /* copy input to output; 1st version */ main() { int c; c = getchar(); while (c != EOF) { putchar(c); c = getchar(); } } ``` If I ran it like this: ``` PS <..loc..> cc copy-0.c PS ./a Black Black White White Gray Gray ``` The output is what I input. And here's a program I made for experimental purposes: ``` #include <stdio.h> /* copy input to output; 1st version */ main() { int c; c = getchar(); while (c != EOF) { printf("%c",c); c = getchar(); } } ``` It produces the same result but is there a difference between `putchar` and `printf`? Which is better to use between the 2?