sicily 6572. partial sum

Description
Given a two-dimention array whose elements are all integers,please calculate the sum of its elements,ignoring thoes who sit at the edge of the array.
For example,given a 7 * 4 array,you should calculate the sum of the 5 * 2 elements.

Input
 Input contains many test cases.For each case,the first line is two integer n and m (0 < n,m <= 100),seperated by space,standing for n * m array.The following n line is the array's elements,separted by space.The input is end by 0 0.

Output
 For each test cases,ouput the sum in a line.

大水题……只要改累加的起点和终点就好了

#include<stdio.h>
#define MAX 101
int partialSum( int matrix[][MAX], int row, int column );

int main()
{
    int matrix[MAX][MAX] = {0};
    int i, j;
    int row, column;
    
    while ( scanf( "%d %d", &row, &column ) && row != 0 )
    {   
        for ( i = 0; i < row; i++ )
        {
            for ( j = 0; j < column; j++ )
            {
                scanf( "%d", &matrix[i][j] );
            } 
        }
        
        printf( "%d\n", partialSum( matrix, row, column ) );
        
    }
    return 0;
}

int partialSum( int matrix[][MAX], int row, int column )
{
    int i, j;
    int sum = 0;
    
    for ( i = 1; i < row - 1; i++ )
    {
        for ( j = 1; j < column - 1; j++ )
        {
            sum = sum + matrix[i][j];
        } 
    }
    
    return sum; 
}