Compilare: user.cpp: In function ‘int main()’: user.cpp:31:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[10]’ [-Wformat=] scanf("%s\n",&a); ^ user.cpp:32:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<strlen(a);j++) ^