Compilare: user.c: In function ‘main’: user.c:12:18: warning: format ‘%s’ expects argument of type ‘char *’, but argument 3 has type ‘char (*)[1000000]’ [-Wformat=] fscanf(fin,"%s",&s); ^ user.c:22:19: warning: statement with no effect [-Wunused-value] a[k-1]=='0'; ~~~~~~^~~~~ user.c:12:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",&s); ^~~~~~~~~~~~~~~~~~~