p277 第十章 数组和指针

//flc.c--有趣的常量 

#include<stdio.h>

#define COLS 4

int sum2d (int ar[][COLS], int rows);

int sum (int ar[],int n);

int main (void)

{
int tota11, tota12, tota13;
int *pt1;
int (*pt2)[COLS];
pt1=(int [2]) {10,20};
pt2=(int [2][COLS]) {{1,2,3,-9},{4,5,6,-8}};

tota11=sum(pt1,2);
tota12=sum2d(pt2,2);
tota13=sum((int []) {4,4,4,5,5,5},6);

printf ("tota11=%d\n",tota11);
printf ("tota12=%d\n",tota12);
printf ("tota13=%d\n",tota13);
return 0;

}

int sum (int ar[],int n)

{
int i;
int tota1=0;
for (i=0;i<n;i++)
tota1 += ar[i];

return tota1;

}

int sum2d (int ar[ ][COLS], int rows)

{
int r;
int c;
int tot=0;

for (r=0;r<rows;r++)
for (c=0;c<COLS;c++)
tot += ar[r][c];
return tot;

}