Converts the number of integer n to the corresponding string, saved in S (two methods)

Method One,

Use the Loop method to remove each bit, save in the character array, and then flip the array.

The code is implemented as follows:

#include <stdio.h>
#include <string.h>
#include <assert.h>
#define MAX 20
void reverse (char *left, char *right)
{
ASSERT (left);
ASSERT (right);
while (left < right)
{
int tmp = *left;
*left = *right;
*right = tmp;
left++;
right--;
}
}
char *itoa (int value, char *s)
{
char *ps = s;
int size = 0;
while (value)
{
*ps=value% + + ' 0 ';
Value/= 10;
ps++;
}
*ps = ' + ';
Size=strlen (s);
Reverse (S, s+size-1);
return s;
}

int main ()
{
int value = 0;
Char Arr[max] = {0};
scanf ("%d", &value);
Itoa (Value,arr);
printf ("%s", arr);
System ("pause");
return 0;
}

Method Two,

Each bit is output in a recursive way. Because when you call yourself (recursively), you save the variable in the run-time stack, and finally when you output the variable at the end of the recursion, the value from the run-time stack does not need to be flipped.

The code is implemented as follows:

#include <stdio.h>

void itoa (int value)
{
if (value >= 10)
{
Itoa (VALUE/10);

}
printf ("%d", value% 10);
}

int main ()
{
int value = 0;
scanf ("%d", &value);
Itoa (value);
System ("pause");
return 0;
}

Converts the number of integer n to the corresponding string, saved in S (two methods)