Compilare: main.cpp: In function 'int main()': main.cpp:8:11: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,a,b,difmax,x,y,pos1,pos2; ^ main.cpp:42:31: warning: 'pos2' may be used uninitialized in this function [-Wmaybe-uninitialized] fout <<pos1<<' '<<pos2; ^ main.cpp:42:22: warning: 'pos1' may be used uninitialized in this function [-Wmaybe-uninitialized] fout <<pos1<<' '<<pos2; ^~~