#include <iostream> #include <math.h> using namespace std; int main(void){ unsigned int N; while(true){ cin>>N; if(N==0) break; if((int)(sqrt(N))*(int)(sqrt(N))==N) cout<<"yes"<<endl; else cout<<"no"<<endl; } return 0; }
#include <iostream> #include <math.h> using namespace std; int main(void){ long long int N; while(true){ cin>>N; if(N==0) break; if((int)(sqrt(N))*(int)(sqrt(N))==N) cout<<"yes"<<endl; else cout<<"no"<<endl; } return 0; }
#include <iostream> using namespace std; char *strcat2(char *dest, const char*src); int main(void){ char* dest = (char *)malloc(256); *dest='\0'; cout<<strcat2(dest,"concat string")<<endl; return 0; } char *strcat2(char *dest, const char*src){ char *ret; ret = dest; while(*dest++); dest--; while(*dest++= *src++); return ret; }
#include <iostream>
#include <string>
using namespace std;
int main(void){
string s = "abcdef";
string::iterator pos;
reverse(s.begin(), s.end());
string tmp ="";
for(int i=0; i< s.length(); i++){
tmp += s[s.length()-i-1];
}
for(pos = s.begin(); pos != s.end(); ++pos)
cout<<*pos;
cout<<endl;
cout<<s<<endl;
cout<<tmp<<endl;
return 0;
}
#include <iostream>
#include <string>
#include <sstream>
using namespace std;
int main(void){
string s= "12345678";
/*string to int:: c_str() version*/
cout<<atoi(s.c_str())+123<<endl;
/*string to int :: stringstream version*/
int tmp;
stringstream ss1(s);
ss1 >> tmp;
cout<< tmp+4<<endl;
int ints = 123;
/*int to string :: sprintf version*/
char str_2[10];
sprintf(str_2,"%d",ints);
cout<<str_2[2]<<endl;
/*int to string :: stringstream version*/
stringstream ss;
ss <<ints;
string str = ss.str();
cout<<str<<endl;
cout<<str[2]<<endl;
return 0;
}
#include <iostream>
using namespace std;
int main(void){
char input[] ="12345678";
int length =(sizeof(input)-1);
int shift;
cin>>shift;
shift = shift % length;
char *tmp = new char[length];
for(int i=0; i< length; i++)
tmp[i]= input[(i+shift)%length];
cout<< tmp <<endl;
return 0;
}
#include <iostream>
using namespace std;
int main(void){
int loop;
cin>>loop;
int *ary = new int[loop];
for(int i=0; i<loop; i++){
int tmp;
cin>>tmp;
ary[i] = tmp;
}
int min=ary[0];
int max =ary[0];
float sum =0;
for(int j=1; j< loop ; j++){
if(ary[j]<min)
min = ary[j];
if(ary[j]>max)
max = ary[j];
sum += ary[j];
}
cout<<"Min = "<<min<<endl;
cout<<"Max= "<<max<<endl;
printf("Avg= %.2f\n",(sum/loop));
}
#include <iostream>
using namespace std;
int main(void){
int year;
cin>> year;
if(year%4==0 && year%100!=0||year%400==0)
cout<<year<<" is Leap Year"<<endl;
else
cout<<year<<" is not Leap Year"<<endl;
return 0;
}
#include <iostream>
#include <time.h>
using namespace std;
struct card{
char color;
int point;
};
void shuffle (struct card *deck, int n){
srand((unsigned) time (NULL));
struct card tmp;
for(int i=0; i< n; i++){
int j = rand()%52;
tmp = deck[i];
deck[i] = deck[j];
deck[j] = tmp;
}
}
int main(void){
struct card deck[52];
for(int i=0; i< 52; i++){
if(i%4==0){
deck[i].color = 's';
deck[i].point = (i/4)+1;
}else if(i%4==1){
deck[i].color = 'd';
deck[i].point = ((i-1)/4)+1;
}else if(i%4==2){
deck[i].color = 'c';
deck[i].point = ((i-2)/4)+1;
}else{
deck[i].color = 'h';
deck[i].point = ((i-3)/4)+1;
}
}
shuffle(deck, 52);
return 0;
}
#include <iostream>
using namespace std;
int strcmp2(const char *dest, const char *ori);
int main(void){
cout<<strcmp2("aello","a")<<endl;
return 0;
}
int strcmp2(const char *dest, const char *ori){
assert(ori !=NULL && dest!=NULL);
int tmp =0;
while(!(tmp = *(unsigned char*)dest - *(unsigned char*)ori)&&*ori){
++dest;
++ori;
}
if(tmp <0){
tmp= -1;
}else if(tmp >0){
tmp=1;
}
return tmp;
}
#include <iostream>
using namespace std;
int strlen2(const char *ori);
int main(void){
cout<<strlen2("hello world")<<endl;
return 0;
}
int strlen2(const char *ori){
assert(ori !=NULL);
int len =0;
while(*ori++ !='\0'){
len++;
}
return len;
}
#include <iostream>
using namespace std;
void *memcpy2(void *dest, const void *ori, int size);
int main(void){
char tmp[] = "adfadfaf";
memcpy2(tmp, "hello world",4);
tmp[4]='\0';
cout<<tmp;
return 0;
}
void *memcpy2(void *dest, const void *ori, int size){
assert(dest!=NULL && ori !=NULL);
char *dest2= (char *) dest;
char *ori2= (char *) ori;
for(int i=0; i< size; i++){
*dest2++ = *ori2++;
}
return dest2;
}
#include <iostream>
using namespace std;
char *strcpy2(char *dest, const char *ori);
int main(void){
char tmp[] = "adfadfaf";
strcpy2(tmp, "hello world");
cout<<tmp;
return 0;
}
char *strcpy2(char *dest, const char *ori){
assert(dest!=NULL && ori !=NULL);
char *addr= dest;
while((*dest++ = *ori++)!='\0');
return addr;
}
