C语言输入输出格式控制

直接上代码：

#include <stdio.h>

/*#define JUMP*/

int main()
{
    /*
    char ch;
    while ((ch = getchar()) != EOF) {
        putchar(tolower(ch));
    }
    */

    char c = 'A';
    signed char sc = -123;
    unsigned char uc = 123;

    short s = 123;
    signed short ss = -123;
    unsigned short us = 123U;

    int i = 123;
    signed int si = -123;
    unsigned int ui = 123U;

    long l = 123L;
    signed long sl = -123L;
    unsigned long ul = 123UL;

    float f = 123.456F;
    double d = 123.456;
    long double ld = 123.456L;

    char str[32] = "abcdefg";

#ifdef JUMP
    /* input */
    printf("input char:");
    scanf("%c", &c);
    printf("input signed char:");
    scanf("%c", &sc);
    printf("input unsigned char:");
    scanf("%c", &uc);

    printf("input short:");
    scanf("%hd", &s);
    printf("input signed short:");
    scanf("%hd", &ss);
    printf("input unsigned short:");
    scanf("%hd", &us);

    printf("input int:");
    scanf("%d", &i);
    printf("input signed int:");
    scanf("%d", &si);
    printf("input unsigned int:");
    scanf("%ud", &ui);

    printf("input long:");
    scanf("%ld", &l);
    printf("input signed long:");
    scanf("%ld", &sl);
    printf("input unsigned long:");
    scanf("%ld", &ul);

    printf("input float:");
    scanf("%f", &f);
    printf("input double:");
    scanf("%lf", &d);
    /*can not find input long double method*/
    /*printf("input long double:");
    scanf("%f", &ld);*/

    printf("input char[]:");
    scanf("%s", str);
#endif

    /*format input*/
    scanf("char%csigned char%cunsigned char%cshort%hdint%dlong%ldfloat%fchar[]%s", &c, &sc, &uc, &s, &i, &l, &f, str);

    /* output */
    printf("\n");
    printf("char\t\t:%20c:\n", c);
    printf("signed char\t:%20c:\n", sc);
    printf("unsigned char\t:%20c:\n", uc);

    printf("short\t\t:%20.2hd:\n", s);
    printf("signed short\t:%20.2hd:\n", ss);
    printf("unsigned short\t:%20.2hd:\n", us);

    printf("int\t\t:%20.2d:\n", i);
    printf("signed int\t:%20.2d:\n", si);
    printf("unsigned int\t:%20.2d:\n", ui);

    printf("long\t\t:%20.2ld:\n", l);
    printf("signed long\t:%20.2ld:\n", sl);
    printf("unsigned long\t:%20.2ld:\n", ul);

    printf("float\t\t:%-20.2f:\n", f);
    printf("double\t\t:%-20.2f:\n", d);
    printf("long double\t:%-20.2Lf:\n", ld);

    printf("char[]\t\t:%-20s\n", str);
}