Eroare de compilare: user.c: In function ‘fill’: user.c:19:13: error: ‘y’ undeclared (first use in this function) for(y=0;y<4;y++) ^ user.c:19:13: note: each undeclared identifier is reported only once for each function it appears in user.c:21:17: warning: ‘return’ with a value, in function returning void [enabled by default] return 1+fill(i+dirx[y], j+diry[y]); ^ user.c:22:9: warning: ‘return’ with a value, in function returning void [enabled by default] return 0; ^ user.c:25:5: warning: ‘return’ with a value, in function returning void [enabled by default] return mem[i][j]; ^ user.c: In function ‘main’: user.c:41:22: error: void value not ignored as it ought to be mem[i][j]=fill(i, j); ^ user.c:30:21: warning: variable ‘y’ set but not used [-Wunused-but-set-variable] int n, i, j, x, y, max; ^ user.c:30:18: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int n, i, j, x, y, max; ^ user.c:29:17: warning: variable ‘fout’ set but not used [-Wunused-but-set-variable] FILE *fin, *fout; ^ user.c:33:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.c:37:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &mat[i][j]); ^