Compilare: main.cpp: In function 'int main()': main.cpp:136:13: warning: unused variable 'x_start' [-Wunused-variable] int x_start,y_start,mini = dim*dim,vecinx,veciny,vecin_minx,vecin_miny; ^~~~~~~ main.cpp:136:21: warning: unused variable 'y_start' [-Wunused-variable] int x_start,y_start,mini = dim*dim,vecinx,veciny,vecin_minx,vecin_miny; ^~~~~~~ main.cpp:136:44: warning: unused variable 'vecinx' [-Wunused-variable] int x_start,y_start,mini = dim*dim,vecinx,veciny,vecin_minx,vecin_miny; ^~~~~~ main.cpp:136:51: warning: unused variable 'veciny' [-Wunused-variable] int x_start,y_start,mini = dim*dim,vecinx,veciny,vecin_minx,vecin_miny; ^~~~~~ main.cpp:136:58: warning: unused variable 'vecin_minx' [-Wunused-variable] int x_start,y_start,mini = dim*dim,vecinx,veciny,vecin_minx,vecin_miny; ^~~~~~~~~~ main.cpp:136:69: warning: unused variable 'vecin_miny' [-Wunused-variable] int x_start,y_start,mini = dim*dim,vecinx,veciny,vecin_minx,vecin_miny; ^~~~~~~~~~ main.cpp:94:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d",&n,&m); ^ main.cpp:97:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%s",1+a[i]); ^ main.cpp:169:37: warning: 'y3' may be used uninitialized in this function [-Wmaybe-uninitialized] total += c[x3][y3]-2; ~~~~~~~~^ main.cpp:169:37: warning: 'x3' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:135:23: warning: 'y2' may be used uninitialized in this function [-Wmaybe-uninitialized] Lee(x2,y2,c,0); ^ main.cpp:135:23: warning: 'x2' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:118:19: warning: 'y1' may be used uninitialized in this function [-Wmaybe-uninitialized] Lee(x1,y1,b,1); ^ main.cpp:118:19: warning: 'x1' may be used uninitialized in this function [-Wmaybe-uninitialized]