max_sum2.c

#include "stdio.h"
#include "stdlib.h"
int sum_calculation(int *data,int number)
{
  int index_i = 0;
  int index_j = 0;
  int sum = 0;
  int maximum_sum = 0;
  if(NULL == data)
  {
    return -1;
  }

  for(index_i = 0;index_i < number;index_i++)
  {
	sum = sum + *(data+index_i);
        if(sum > maximum_sum)
	{
	   maximum_sum =  sum;
	}	
	else if(sum < 0)
	{
	   sum  = 0;
	}
  }
  return maximum_sum;
}


int main(void)
{
  int number = 0;
  int index  = 0;
  int *data = NULL;
  int maximum_sum = 0;

  scanf("%d",&number);

  data = (int*)malloc(number*sizeof(int));

  for(index = 0;index < number;index++)
  {
    printf("please input the %d number",index);
    scanf("%d",(data+index));
  }

  for(index = 0; index < number;index++)
  {
    printf("the input number are as follow %d\n",*(data+index));
  }

  maximum_sum = sum_calculation(data,number);
  printf("%d",maximum_sum);

  free(data);
  return 0;
}