Compilare: main.cpp: In function 'int main()': main.cpp:28:11: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] else if(c==2) ^~ main.cpp:11:50: warning: 'ct3' may be used uninitialized in this function [-Wmaybe-uninitialized] int x,n,k,gigel=0,a,c,i,nr,nr2,r,ct,ct2,r2,m,ct3,j; ^~~