printf输出全格式（C语言）_printf("\\")输出

#include <stdio.h>
 
int main()
{
    int numid=666;
    unsigned int numo=012;//0在整数最前面是指该数据是八进制形式的数据
    unsigned int numu=-1;//-1可表示无符号数中最大数
    unsigned int numox=0x12ab;
    float numf=12345678912345678.212000;//下面数据异常是因为数据太大单精度的精度已经无法表示了
    double numlf=12345678912345678.212000;//下面数据异常是因为数据太大双精度的精度也无法精确到小数（用这么大的数是为了验证%f和%lf输出是一样的）
    double numg=2,numG=-10001.88699999999966111;
    char charc=49;//也就是字符'1'
//    int num=0;
//    int i=0;
 
    printf("带%%号格式输出:\n");
    printf("%i %d\n"
           "%o\n"
           "%u\n"
           "%x %X\n"
           "%f %lf %f %lf\n"
           "%e\n"
           "%g %G\n"
           "%c\n"
           "%s\n"
           "%p\n"
           "%%\n",
           numid,numid,
           numo,
           numu,
           numox,numox,
           numf,numf,numlf,numlf,
           numlf,
           numg,numG,
           charc,
           "hello",
           numid);
 
//    printf("this%n",&num);
//    i=num;
//    printf("\n%d\n",i);
 
    return 0;
}

#include <stdio.h>
 
int main()
{
    int intx1=999999,intx2=999;
 
    printf("---%5d---%5d---\n",intx1,intx2);
    printf("%*d\n", 7, intx2);//将*换为7，相当于printf("%7d",intx2);
    return 0;
}

#include <stdio.h>
 
int main()
{
    int intx1=999999,intx2=9;
    int intx3=-1;
 
    printf("___%-5d___%-5d___\n",intx1,intx2);
    printf("___%+d___%+d___\n",intx2,intx3);
    printf("___% d___% d___\n",intx2,intx3);
    printf("___%#o___%#o___\n",intx2,intx2);
    printf("___%-05d___%05d___\n",intx2,intx2);
    return 0;
}