请问一下,C prime plus第六版 ,第十章的程序10.18,你是用什么编译器编译的。
我用的visual studio 2022编译不了,显示不允许使用变长数组。
请问有什么办法解决?
用固定长度的数组
#include <stdio.h>
#define ROWS 3
#define COLS 4
int sum2d(int rows, int cols, int ar[rows][cols]);
int main(void)
{
int i, j;
int rs = 3;
int cs = 10;
int junk[ROWS][COLS] = {
{ 2, 4, 6, 8 },
{ 3, 5, 7, 9 },
{ 12, 10, 8, 6 }
};
int morejunk[ROWS - 1][COLS + 2] = {
{ 20, 30, 40, 50, 60, 70 },
{ 5, 6, 7, 8, 9, 10}
};
int varr[rs][cs];
for (i = 0; i < rs; i++)
for (j = 0; j < cs; j++)
varr[i][j] = i * j + j;
printf("3x4 array\n");
printf("Sum of all elements = %d\n", sum2d(ROWS, COLS, junk));
printf("2x6 array\n");
printf("Sum of all elements = %d\n", sum2d(ROWS - 1, COLS + 2, morejunk));
printf("3x10 VLA\n");
printf("Sum of all elements = %d\n", sum2d(rs, cs, varr));
return 0;
}
int sum2d(int rows, int cols, int ar[rows][cols])
{
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;
}