Compilare: user.cpp: In function ‘int dfs(int, int, int&, char)’: user.cpp:20:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int dimen(int, int, int, char)’: user.cpp:32:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:38:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &L, &C); ^ user.cpp:39:78: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=L;i++) { v[i][0]='1'; fscanf(f, "%s", v[i]+1); } ^