Compilare: user.cpp: In function ‘int main()’: user.cpp:16:34: warning: unused variable ‘l’ [-Wunused-variable] int n, m, lc, cc, i, sf, in, l, pix, piy, pfx, pfy, col, lin, j, min; ^ user.cpp:16:57: warning: unused variable ‘col’ [-Wunused-variable] int n, m, lc, cc, i, sf, in, l, pix, piy, pfx, pfy, col, lin, j, min; ^ user.cpp:16:62: warning: unused variable ‘lin’ [-Wunused-variable] int n, m, lc, cc, i, sf, in, l, pix, piy, pfx, pfy, col, lin, j, min; ^ user.cpp:21:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d %d\n", &n, &m); ^ user.cpp:24:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%c", &c); ^ user.cpp:38:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%c", &c); ^ user.cpp:72:21: warning: ‘pfy’ may be used uninitialized in this function [-Wmaybe-uninitialized] coada[1].lin=pfy; ^ user.cpp:73:21: warning: ‘pfx’ may be used uninitialized in this function [-Wmaybe-uninitialized] coada[1].col=pfx; ^ user.cpp:87:37: warning: ‘piy’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf( fout, "%d ", b[piy][pix]+1); ^ user.cpp:87:37: warning: ‘pix’ may be used uninitialized in this function [-Wmaybe-uninitialized]