C编程基础-基础篇 2

% [标志位] [宽度] [精度] [数字长度] 说明符

#include <stdio.h>

int main() {
    printf("Characters: %c \n", 'a');
    printf ("Decimals: %d %+ld\n", -1977, 650000L);
    printf ("Preceding with blanks: %10d \n", 1977);
    printf ("Preceding with zeros: %010d \n", 1977);
    printf ("Some different radices: %d %x %o %#x %#o \n", 100, 100, 100, 100, 100);
    printf ("floats: %4.2f %+.0e %E \n", 3.1415, 3.1415, 3.1415);
    printf ("%s \n", "A string");
    return 0;
}

Characters: a 
Decimals: -1977 +650000
Preceding with blanks:       1977 
Preceding with zeros: 0000001977 
Some different radices: 100 64 144 0x64 0144 
floats: 3.14 +3e+00 3.141500E+00 
A string 

 (int)a