Compilare: user.cpp: In function ‘bool Compare(int, int, int, int)’: user.cpp:50:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:56:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d",&N); ^ user.cpp:67:70: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d",&Mat[i][j][k]),d[i][j][k]=Mat[i][j][k]; ^ user.cpp:76:59: warning: ‘posy’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(Min>d[lvl][i][j]||Compare(i,j,posx,posy)) ^ user.cpp:76:59: warning: ‘posx’ may be used uninitialized in this function [-Wmaybe-uninitialized]