我无法解决这些“ undefined reference ”问题。我的头文件中可能存在错误。我的 IDE 是 CodeBlocks
#include<windows.h>
#ifdef __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include "maths.h"
#include <math.h>
int main(int argc, char *argv[])
{
//stuff
struct Vector v1;
struct Vector v2;
v1.x = 3;
v1.y = 4;
v2.x = 6;
v2.y = 10;
struct Vector v3 = addVectors(v1,v2);
printf("%f %f",v3.x,v3.y);
}
数学.h
#include <math.h>
#include <stdio.h>
#ifndef MATHS_H_INCLUDED
#define MATHS_H_INCLUDED
struct Vector {
float x;
float y;
};
void setVector(struct Vector *v, float x, float y);
struct Vector addVectors(struct Vector v1, struct Vector v2);
void makeUnit(Vector *v);
#endif // MATHS_H_INCLUDED
<小时/>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "maths.h"
void setVector(struct Vector *v, float x, float y){
v->x = x;
v->y = y;
}
struct Vector addVectors(struct Vector v1, struct Vector v2){
int x1 = v1.x;
int x2 = v2.x;
int y1 = v1.y;
int y2 = v2.y;
struct Vector v3;
v3.x = x1 + x2;
v3.y = y1 + y2;
return v3;
}
void makeUnit(Vector *v){
double a = (v->x * v->x) + (v->y * v->y);
double lengthvector = sqrt(a);
v->x = x/lengthvector;
v->y = y/lengthvector;
}
我可以编译 struct Vector,但无法编译函数。
||=== Build: |192|undefined reference to `addVectors(Vector, Vector)'|
||error: ld returned 1 exit status|
||=== Build failed: 2 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|
最佳答案
尝试像这样更改函数:
struct Vector* addVectors(struct Vector v1, struct Vector v2);
并且在这个函数中返回一个Vector的指针
关于c - 对 'addVectors(Vector,Vector)' 的 undefined reference ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56277158/