VALIDASI I

// soal buat validasi min kata 2 harus daikhiri dengan "cake"/"pia"
// input valid = abc cake, abc defgh pia
// input tidak valid = abc def, abc,cake,pia

#include<iostream>

using namespace std;

int main(){
    char x[100];
    int i=0,flag;
    do{
        flag=0;
        cout<<"Masukan Input : ";
        cin.getline(x,100);
        for(i=0;i<strlen(x);i++)
            if(x[i]==' ')//cek satu persatu characternya harus ada spasi kalo min 2 kata
                flag=1;
        i=strlen(x)-4;
        //cake = 4 huruf, pasti paling belakang
        if((x[i]=='c'||x[i]=='C')&&x[i+1]=='a'&&x[i+2]=='k'&&x[i+3]=='e')
            flag++;
        i=strlen(x)-3;
        //pia = 3 huruf, pasti paling belakang
        if((x[i]=='p'||x[i]=='P')&&x[i+1]=='i'&&x[i+2]=='a')
            flag++;
    }while(flag!=2);
    cout<<"Input Berhasil";
    cin.get();
}