Compilare: user.cpp: In function ‘int main()’: user.cpp:10:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &m, &n); ^ user.cpp:13:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &cost[i][j]); ^ user.cpp:35:34: warning: ‘savea’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[i][j]=cost[i][j]+minib; ^