c语言printf输出函数的介绍

printf(“格式控制字符串”, 输出表列)

#include <stdio.h>

int main()

{

int m = 192, n = -234;

double f = 9.8;

char c = '@';

char *str = "abcdefghi";

//演示width

     printf("%10d%12lf%4c%8s\n", n, f, c, str);

//演示.precision

     printf("n: %.9d  %.4d\n", n, n);

    printf("f: %.2lf  %.4lf  %.10lf\n", f, f, f);

     printf("str: %.5s  %.15s\n", str, str);

//演示flag

     printf("m=%10d, m=%-10d\n", m, m);  //演示 - 的用法

     printf("m=%+d, n=%+d\n", m, n);  //演示 + 的用法

     printf("m=% d, n=% d\n", m, n);  //演示空格的用法

     printf("f=%.0lf, f=%#.0lf\n", f, f);  //演示#的用法

return 0;

}