C 如何将整数数组传递给库函数
我正试图编写一个程序,调用一个库函数()来解决装箱问题。我从大学起就没学过C,而且我已经很生疏了 我已经把图书馆整理好了。并且静态链接,所以我不会得到关于不存在的函数的错误,但是根据gdb,现在我在C 如何将整数数组传递给库函数,c,C,我正试图编写一个程序,调用一个库函数()来解决装箱问题。我从大学起就没学过C,而且我已经很生疏了 我已经把图书馆整理好了。并且静态链接,所以我不会得到关于不存在的函数的错误,但是根据gdb,现在我在binpack3d()函数上得到了一个segfualt。我认为这是某种指针错误。以下是引用库函数的代码: #include <stdio.h> #include "3dbin.h" int main(void) { int w[2]; int h[2]; int d[2]; w[0
binpack3d()
函数上得到了一个segfualt。我认为这是某种指针错误。以下是引用库函数的代码:
#include <stdio.h>
#include "3dbin.h"
int main(void)
{
int w[2];
int h[2];
int d[2];
w[0]=5;
h[0]=6;
d[0]=7;
w[1]=5;
h[1]=6;
d[1]=7;
int x[2];
int y[2];
int z[2];
int bno[1];
int lb;
int ub;
binpack3d(1, 12, 12, 24,
w, h, d,
x, y, z, bno,
lb, ub, 10);
return(1);
}
和头文件(也不确定我是否做对了)
这是它的文档
* This file contains the callable routine binpack3d with prototype
*
* void binpack3d(int n, int W, int H, int D,
* int *w, int *h, int *d,
* int *x, int *y, int *z, int *bno,
* int *lb, int *ub, int timelimit);
*
* the meaning of the parameters is the following:
* n Size of problem, i.e. number of boxes to be packed.
* This value must be smaller than MAXITEMS defined below.
* W,H,D Width, height and depth of every bin.
* w,h,d Integer arrays of length n, where w[j], h[j], d[j]
* are the dimensions of box j for j=0,..,n-1.
* x,y,z,bno Integer arrays of length n where the solution found
* is returned. For each box j=0,..,n-1, the bin number
* it is packed into is given by bno[j], and x[j], y[j], z[j]
* are the coordinates of it lower-left-backward corner.
* lb Lower bound on the solution value (returned by the procedure).
* ub Objective value of the solution found, i.e. number of bins
* used to pack the n boxes. (returned by the procedure).
* timelimit Time limit for solving the problem expressed in seconds.
* If set to zero, the algorithm will run until an optimal
* solution is found; otherwise it terminates after timelimit
* seconds with a heuristic solution.
我做错了什么?如何调用此函数并显示结果。您需要找到作为指针的项的地址:
binpack3d(1, 12, 12, 24,
w, h, d,
x, y, z, bno,
&lb, &ub, 10);
看起来你的电话应该在下面。原始代码只传递整数而不是地址(这两个是库函数返回的值) 原型需要更改以反映这两个“返回值”是
int*
:
void binpack3d(int , int , int , int ,
int *, int *, int *,
int *, int *, int *, int *,
int *, int *, int );
binpack3d(1, 12, 12, 24,
w, h, d,
x, y, z, bno,
&lb, &ub, 10);
binpack3d(1, 12, 12, 24,
w, h, d,
x, y, z, bno,
&lb, &ub, 10);
void binpack3d(int , int , int , int ,
int *, int *, int *,
int *, int *, int *, int *,
int *, int *, int );