#include<iostream.h>
#include<string>
int main()
{
char a[100];
char b[100];
int c[100]={0,0,0,0,0,0,},i,j,n=0;
cout<<"Nhap vao chuoi ki tu"<<endl;
cin>>a;
//doan chinh
for(i=0;i<strlen(a);i++)
for(j=0;j<=n
if(a[i]==b[j])
{c[j]+=1;break;}
else
{
j++;
if(j>n)
{
b[n]=a[i];
c[n]+=1;
n=j;break;
}
}
//khi lay gia tri cua strlen(b) no + them toi 100 le may do tuy vao len(a)
a[n]='\0';
for(i=0;i<(strlen(b)-100);i++)
cout<<"tu "<<b[i]<<" xuat hien "<<c[i]<<" lan"<<endl;
return 0;
}

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