Our Major Lang IsCAndCPlus Plus/print/김상섭

~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;
}