分享一个螺旋矩阵的实现

[玩笑]

#include <stdio.h>

void csh ( const int i, const int m, int arr[i][m] );
void cl ( const int i, const int m, int arr[i][m] );
void print ( const int i, const int m, int arr[i][m] );

int main(int argc, char **argv)
{
	int x,y;

	printf ( "X,Y:" );
	scanf ( "%d,%d", &x, &y );
	int arr[x+2][y+2];
	printf ( "%d\t%d\n", x, y );

	csh ( x+2, y+2, arr );
	cl ( x+2, y+2, arr );
	print ( x+2, y+2, arr );
		
	return 0;
}

void csh ( int i, const int m, int arr[i][m] ) {
	int j,k;
	for ( j = 0; j < i; j++ ){
		for ( k = 0; k < m; k++ ) {
			arr[j][k] = 0;
		}
	}
	for ( j = 0; j < i; j++ ) {
		arr[j][0] = arr[j][m-1] = -1;
	}
	for ( j = 0; j < m; j++ ) {
		arr[0][j] = arr[i-1][j] = -1;
	}
}

void cl (const int i, const int m, int arr[i][m]) {
	int x,y,j,k,n;
	x = y = 1;
	j = k = n = 0;
	while ( arr[x+j][y+k] == 0){
		while ( arr[x+j][y+k] == 0){
			arr[x += j][y += k] = n++;
		}
		if ( arr[x][y+1] == 0 ){
			j = 0;
			k = 1;
		} else if ( arr[x+1][y] == 0 ) {
			j = 1;
			k = 0;
		} else if ( arr[x][y-1] == 0 ) {
			j = 0;
			k = -1;
		} else {
			j = -1;
			k = 0;
		}
	}
}

void print ( const int i, const int m, int arr[i][m] ) {
	int j,k;
	for ( j = 1; j < i-1; j++ ){
		for ( k = 1; k < m-1; k++ ) {
			printf ( "%5d" , arr[j][k] );
		}
		putchar('\n');
	}
}

[南气子水]

编译不通过？

[玩笑]

WIN下codelite编译通过（GCC加参数--std=c99)
LINUX下用GCC时也要加参数，

[fengyuxiaole]

谢谢啊 呵呵

[panxuxuyan]

玩笑是个高手

[panxuxuyan]

scanf ( "%d,%d", &x, &y );
int arr[x+2][y+2];

void csh ( int i, const int m, int arr[i][m] ) {
int j,k;
for ( j = 0; j < i; j++ ){
for ( k = 0; k < m; k++ ) {
arr[j][k] = 0;
}
}
for ( j = 0; j < i; j++ ) {
arr[j][0] = arr[j][m-1] = -1;
}
for ( j = 0; j < m; j++ ) {
arr[0][j] = arr[i-1][j] = -1;
}
}

变长数组的主要用途就在这了，

[panxuxuyan]

主函数改成循环就行了