C Primer Plus(第五版)中文版,不用多说了

				/* bases.c--prints 100 in decimal, octal, and hex */
				#include 
				int main(void)
				{
				    int x = 100;
				    
				    printf("dec = %d; octal = %o; hex = %x\n", x, x, x);
				    printf("dec = %d; octal = %#o; hex = %#x\n", x, x, x);
				    
				    return 0;
				}