exam8-12.cpp

很好的C程序设计教程

/*文件名:exam8_12.cpp*/
#include <stdio.h>
#define M 2
#define N 4
int fun1(int b[][N])
{
	int s=0,i,j;
	for (i=0;i<M;i++)
		for (j=0;j<N;j++)
			s=s+b[i][j];
	return(s);
}
int fun2(int (*pa)[N])
{
int s=0,i,j;
	for (i=0;i<M;i++)
		for (j=0;j<N;j++)
			s=s+*(*(pa+i)+j);
	return(s);
}
int fun3(int (*pa)[N])
{
	int s=0,i,j;
	for (i=0;i<M;i++)
		for (j=0;j<N;j++)
			s=s+pa[i][j];
	return(s);
}
main()
{
	int a[M][N]={{1,2,3,4},{5,6,7,8}};
	printf("call fun1:s=%d\n",fun1(a));
	printf("call fun2:s=%d\n",fun2(a));
	printf("call fun3:s=%d\n",fun3(a));
}