Eroare de compilare: main.cpp: In function 'int main()': main.cpp:33:82: error: 'floor' was not declared in this scope yi = a.y + (sens ? floor(1.0 * (xi - a.x) * (b.y - a.y) / (b.x - a.x)) : ceil(1.0 * (xi - a.x) * (b.y - a.y) / (b.x - a.x))); ^ main.cpp:33:135: error: 'ceil' was not declared in this scope yi = a.y + (sens ? floor(1.0 * (xi - a.x) * (b.y - a.y) / (b.x - a.x)) : ceil(1.0 * (xi - a.x) * (b.y - a.y) / (b.x - a.x))); ^ main.cpp:18:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n) ; ^ main.cpp:20:47: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &v[i].x, &v[i].y) ; ^ Non zero exit status: 1