printf()转义序列和转换字符

#include <stdio.h>
int main()
{

    printf("Quantity\tCost\tTotal\n");

    printf("%d\t\t$%.2f\t$%.2f\n", 3, 9.99, 29.97);

    printf("\b\b\b\b can be fixed with the ");

    printf("\\%c Escape character\n", 'b');

    printf("\n\a\n\a\n\a\n\aSkip a few lines, and beep ");

    printf("a few beeps.\n\n\n");

    printf("%s %c.", "You are kicking butt learning", 'C');

    printf("%d.\n", 4);

    printf("%.1f%c of the book.\n", 12.500, '%');

    printf("\n\nOne third equals %.2f or ", 0.333333);

    printf("%.3f or %.4f or ", 0.333333, 0.333333);

    printf("%.5f or %.6f\n\n\n", 0.333333, 0.3333333);
    return 0;
}