#include "iostream.h" #include "conio.h" #include "string.h" #include "ctype.h" #include "stdio.h" main() { char chuoi[60]; cout<<"nhap vao mot chuoi: "; gets(chuoi); int l = strlen(chuoi); int d=0; for(int i=0;i<l;i++) if (chuoi[i]== 'l') d++; cout<<"xau vau nhap la: "; puts(chuoi); cout<<endl; cout<<"do dai xau la: "<<l; cout<<endl<<"so luong ki tu l trong xau la: "<<d; getch(); } . puts(chuoi); cout<<endl; cout<<"do dai xau la: "<<l; cout<<endl<<"so luong ki tu l trong xau la: "<<d; getch(); }