35 size_t printf(
const char* format, ...);
43 size_t snprintf(
char* str,
size_t size,
const char* format, ...);
size_t printf(const char *format,...)
print format string on user output
size_t putc(char c)
print a single character on user output
size_t snprintf(char *str, size_t size, const char *format,...)
print format string on string or user output