Compilare: main.cpp: In function 'void prop(char*, int, int, int&)': main.cpp:51:20: warning: unused variable 'k' [-Wunused-variable] int i,j=0,ok=0,k,t=0; ^ main.cpp: In function 'int main()': main.cpp:138:18: warning: unused variable 's' [-Wunused-variable] char c[1000],s[1000]; ^ main.cpp:139:17: warning: unused variable 'x' [-Wunused-variable] int n,i,j=0,x,y,sol=0,t=0,m,cont=0; ^ main.cpp:139:19: warning: unused variable 'y' [-Wunused-variable] int n,i,j=0,x,y,sol=0,t=0,m,cont=0; ^ main.cpp:139:27: warning: unused variable 't' [-Wunused-variable] int n,i,j=0,x,y,sol=0,t=0,m,cont=0; ^ main.cpp:139:31: warning: unused variable 'm' [-Wunused-variable] int n,i,j=0,x,y,sol=0,t=0,m,cont=0; ^ main.cpp:139:33: warning: unused variable 'cont' [-Wunused-variable] int n,i,j=0,x,y,sol=0,t=0,m,cont=0; ^~~~ main.cpp: In function 'void rec(char*, int, int, int&)': main.cpp:115:33: warning: 'xx' may be used uninitialized in this function [-Wmaybe-uninitialized] rec(c,xx,yy,sol); ^