~cpp
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#include <string.h>
void print_d(int temp, int sort)
{
char buffer[20];
itoa(temp,buffer,10);
if(strlen(buffer) < sort)
{
for(int i = 0; i < sort - strlen(buffer); i++)
fputchar(' ');
}
fputs(buffer,stdout);
}
void print_d_a(int * temp, int num)
{
fputs("{ ", stdout);
for(int i =0; i < num; i++)
{
print_d(*(temp+i), 0);
if(i != num -1)
fputs(", ", stdout);
else
fputs(" }", stdout);
}
}
void print_s(const char * temp, int sort)
{
if(strlen(temp) < sort)
{
for(int i = 0; i < sort - strlen(temp); i++)
fputchar(' ');
}
fputs(temp, stdout);
}
void print_s_a(const char ** temp, int num)
{
fputs("{ ", stdout);
for(int i =0; i < num; i++)
{
print_s(*(temp+i), 0);
if(i != num -1)
fputs(", ", stdout);
else
fputs(" }", stdout);
}
}
void print_f(double temp, int sort)
{
int decimal, sign;
char *buffer;
buffer = _fcvt( temp, 7, &decimal, &sign );
if(sign)
fputchar('-');
for(int i = 0; i < decimal;i++)
fputchar(*buffer++);
fputchar('.');
fputs(buffer, stdout);
}
void print_f_a(double * temp, int num)
{
fputs("{ ", stdout);
for(int i =0; i < num; i++)
{
print_f(*(temp+i), 0);
if(i != num -1)
fputs(", ", stdout);
else
fputs(" }", stdout);
}
}
void print(const char * list, ...)
{
va_list args;
va_start(args, list);
while(*list != '\0')
{
if(*list =='%')
{
int sort = 0;
if(isdigit(*++list))
{
sort = *list - 48;
}
else
list--;
if(*++list == 'd')
{
print_d(va_arg(args, int), sort);
}
else if(*list == 's')
{
print_s(va_arg(args, const char *), sort);
}
else if(*list == 'f')
{
print_f(va_arg(args, double), sort);
}
list++;
}
else if(*list == '@')
{
int num;
if(*++list == 'd')
{
int * temp = va_arg(args, int *);
num = va_arg(args, int);
print_d_a(temp, num);
}
else if(*list == 's')
{
const char ** temp = va_arg(args, const char **);
num = va_arg(args, int);
print_s_a(temp, num);
}
else if(*list == 'f')
{
double * temp = va_arg(args, double *);
num = va_arg(args, int);
print_f_a(temp, num);
}
list ++;
}
else if(*list == '\n')
{
putchar(*list++);
}
else
putchar(*list++);
}
va_end(args);
}
int main()
{
int a = 10;
char *b = "example";
double c = 10.5;
print("number: %d, string: %s, real number: %f\n", a, b, c);
int aa[3] = { 1, 2, 3 };
char *bb[2] = { "abc", "def" };
print("array: @d\n", aa, 3);
print("array: @s\n", bb, 2);
int aaa = 123;
int bbb = 12345;
int ccc = 12345678;
print("number: %5d\n", aaa);
print("number: %5d\n", bbb);
print("number: %5d\n", ccc);
return 0;
}