Eroare de compilare: user.cpp:25:15: error: ‘int index [520]’ redeclared as different kind of symbol int index[nmax]; ^ In file included from /usr/include/c++/4.8/cstring:42:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:48, from user.cpp:1: /usr/include/string.h:482:1: error: previous declaration of ‘const char* index(const char*, int)’ index (__const char *__s, int __c) __THROW ^ user.cpp: In function ‘void read_input()’: user.cpp:75:30: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘bool*’ [-Wformat=] scanf("%d", &light[i]); ^ user.cpp: In function ‘void run_gauss(int, int)’: user.cpp:121:16: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript index[i] = p; ^ user.cpp:139:41: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript double angle = atan2(ray[index[i]].y, ray[index[i]].x) * 180 / PI; ^ user.cpp:139:58: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript double angle = atan2(ray[index[i]].y, ray[index[i]].x) * 180 / PI; ^ user.cpp: In function ‘void read_input()’: user.cpp:67:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:70:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf", &v[i].x1, &v[i].y1); ^ user.cpp:71:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf", &v[i].x2, &v[i].y2); ^ user.cpp:75:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &light[i]); ^ user.cpp: In function ‘int main()’: user.cpp:148:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("laser.in","r",stdin); ^ user.cpp:149:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("laser.out","w",stdout); ^