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POJ1503(AC).cpp
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#include <stdio.h>
#include <string.h>
void AddDigits(int sum[], int a[], int maxdigit)
{
int i;
for(i = 0; i < maxdigit; i++)
{
sum[i] = sum[i] + a[i];
}
for(i = 0; i < maxdigit; i++)
{
if(sum[i] > 9)
{
sum[i] = sum[i] - 10;
sum[i + 1]++;
}
else if(sum[i] < 0)
{
sum[i] = sum[i] + 10;
sum[i + 1]--;
}
}
}
void GetDigits(int a[], char buffer[], int maxdigit)
{
int i;
int j;
int len;
len = strlen(buffer);
i = len - 1;
j = 0;
while(i >= 0 && j < maxdigit)
{
a[j] = buffer[i] - '0';
j++;
i--;
}
}
void PrintDigits(int digits[], int maxdigit)
{
int i;
i = maxdigit;
while(i >= 0 && digits[i] == 0)
{
i--;
}
if(i == -1)
{
printf("0");
}
else
{
while(i >= 0)
{
printf("%c", digits[i] + '0');
i--;
}
}
}
int main()
{
int a[200];
int sum[200];
char buffer[1000];
memset(a, 0, 200 * sizeof(int));
memset(sum, 0, 200 * sizeof(int));
while(1)
{
gets(buffer);
if(strcmp(buffer, "0") == 0)
{
break;
}
else
{
GetDigits(a, buffer, 150);
AddDigits(sum, a, 150);
}
}
PrintDigits(sum, 150);
puts("");
return 0;
}