Compilare: user.cpp: In function ‘int spidey(int, int)’: user.cpp:48:9: warning: unused variable ‘k’ [-Wunused-variable] int k, add, newi, newj, nexti, nextj, val, next2i, next2j; ^ user.cpp:48:12: warning: unused variable ‘add’ [-Wunused-variable] int k, add, newi, newj, nexti, nextj, val, next2i, next2j; ^ user.cpp:48:17: warning: unused variable ‘newi’ [-Wunused-variable] int k, add, newi, newj, nexti, nextj, val, next2i, next2j; ^ user.cpp:48:23: warning: unused variable ‘newj’ [-Wunused-variable] int k, add, newi, newj, nexti, nextj, val, next2i, next2j; ^ user.cpp:48:43: warning: unused variable ‘val’ [-Wunused-variable] int k, add, newi, newj, nexti, nextj, val, next2i, next2j; ^ user.cpp:48:48: warning: unused variable ‘next2i’ [-Wunused-variable] int k, add, newi, newj, nexti, nextj, val, next2i, next2j; ^ user.cpp:48:56: warning: unused variable ‘next2j’ [-Wunused-variable] int k, add, newi, newj, nexti, nextj, val, next2i, next2j; ^ user.cpp: In function ‘void calc(int, int)’: user.cpp:72:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k = 0; k < eq.size(); ++ k) { ^ user.cpp:73:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(q = 0; q < eq.size(); ++ q) { ^ user.cpp:85:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k = 0; k < eq.size(); ++ k) ^ user.cpp: In function ‘int main()’: user.cpp:92:18: warning: unused variable ‘aux’ [-Wunused-variable] int i, j, k, aux, newi, starti, q, startj, newj; ^ user.cpp:92:37: warning: unused variable ‘q’ [-Wunused-variable] int i, j, k, aux, newi, starti, q, startj, newj; ^