Compilare: main.cpp: In function 'int onion(int, int)': main.cpp:19:11: warning: no return statement in function returning non-void [-Wreturn-type] tata[x]=y;} ^ main.cpp: In function 'int main()': main.cpp:44:1: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (b[v[i].x+dx[d]][v[i].y+dy[d]]) ^~ main.cpp:45:70: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' onion(findt(b[v[i].x][v[i].y]),findt(b[v[i].x+dx[d]][v[i].y+dy[d]]));++i;} ^~ main.cpp:25:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("matrice2.in","r",stdin); ^ main.cpp:26:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("matrice2.out","w",stdout); ^ main.cpp:28:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&q); ^ main.cpp:31:43: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]),v[++nr].x=i,v[nr].y=j; ^ main.cpp:34:63: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&s[i].x1,&s[i].y1,&s[i].x2,&s[i].y2),s[i].p=i; ^