Compilare: user.cpp: In function ‘int main()’: user.cpp:25:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in,"%d%d",&n,&m); ^ user.cpp:34:20: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in," "); ^ user.cpp:99:17: warning: ‘c2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (sol[l2][c2] == INITMAX) ^ user.cpp:79:19: warning: ‘l1’ may be used uninitialized in this function [-Wmaybe-uninitialized] stiv[inc].l = l1; stiv[inc].c = c1; ^ user.cpp:99:17: warning: ‘l2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (sol[l2][c2] == INITMAX) ^ user.cpp:79:37: warning: ‘c1’ may be used uninitialized in this function [-Wmaybe-uninitialized] stiv[inc].l = l1; stiv[inc].c = c1; ^