Compilare: main.cpp: In function 'int main()': main.cpp:18:52: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'int' [-Wformat=] for(j=1; j<=n+1; j++) printf("%s",ch[j]); ^ main.cpp:35:42: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'int' [-Wformat=] for(j=1; j<=n; j++) printf("%s",ch[j]); ^ main.cpp:20:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ok); ^ main.cpp:37:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ok); ^