Compilare: user.cpp: In function ‘int main()’: user.cpp:14:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &k); ^ user.cpp:35:32: warning: ‘par’ may be used uninitialized in this function [-Wmaybe-uninitialized] a[i][j]=par; ^ user.cpp:40:31: warning: ‘impar’ may be used uninitialized in this function [-Wmaybe-uninitialized] a[i][j]+=impar; ^