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45 lines
961 B
45 lines
961 B
#include "polygon.h"
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#include <iostream>
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#include <dlfcn.h>
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int main()
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{
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using std::cout;
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using std::cerr;
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// load the triangle library
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void* triangle = dlopen("./triangle.so", RTLD_LAZY);
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if (!triangle)
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{
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cerr << "Cannot load library: " << dlerror() << '\n';
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return 1;
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}
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// load the symbols
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create_t* create_triangle = (create_t*) dlsym(triangle, "create");
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destroy_t* destroy_triangle = (destroy_t*) dlsym(triangle, "destroy");
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if (!create_triangle || !destroy_triangle)
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{
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cerr << "Cannot load symbols: " << dlerror() << '\n';
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return 1;
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}
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// create an instance of the class
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polygon* poly = create_triangle();
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// use the class
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poly->set_side_length(7);
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cout << "The area is: " << poly->area() << '\n';
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// destroy the class
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destroy_triangle(poly);
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// unload the triangle library
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dlclose(triangle);
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return 0;
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}
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