Compilare: main.cpp: In function 'int caz(int, int)': main.cpp:8:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=1;k<=n-2;k++) ~^~~~~ main.cpp:13:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'void af()': main.cpp:16:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<n;i++) ~^~ main.cpp: In function 'void formare()': main.cpp:30:26: warning: array subscript has type 'char' [-Wchar-subscripts] matrice[i][j]=2*n-2; ^ main.cpp:30:29: warning: array subscript has type 'char' [-Wchar-subscripts] matrice[i][j]=2*n-2; ^ main.cpp:35:26: warning: array subscript has type 'char' [-Wchar-subscripts] matrice[i][j]=n-1; ^ main.cpp:35:29: warning: array subscript has type 'char' [-Wchar-subscripts] matrice[i][j]=n-1; ^ main.cpp: In function 'int main()': main.cpp:49:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<per;i++) ~^~~~ main.cpp:52:19: warning: array subscript has type 'char' [-Wchar-subscripts] if(util[c1][c2]==0) ^ main.cpp:52:23: warning: array subscript has type 'char' [-Wchar-subscripts] if(util[c1][c2]==0) ^ main.cpp:54:27: warning: array subscript has type 'char' [-Wchar-subscripts] n2-=matrice[c1][c2]; ^ main.cpp:54:31: warning: array subscript has type 'char' [-Wchar-subscripts] n2-=matrice[c1][c2]; ^ main.cpp:55:20: warning: array subscript has type 'char' [-Wchar-subscripts] util[c1][c2]=1; ^ main.cpp:55:24: warning: array subscript has type 'char' [-Wchar-subscripts] util[c1][c2]=1; ^ main.cpp:56:20: warning: array subscript has type 'char' [-Wchar-subscripts] util[c2][c1]=1; ^ main.cpp:56:24: warning: array subscript has type 'char' [-Wchar-subscripts]