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#include <iostream> using namespace std; int main(void){ int i; cin>>i; if(i>12) i -=12; cout<<i<<endl; return 0; }
if() ʸ1; else ʸ2;
10<=i&&i<=20 ¢ªi¡á10~20 i<=10||20<=i ¢ªi¡â10=20
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#include <iostream> #include <string> //string¥¯¥é¥¹¤Î¥¤¥ó¥¯¥ë¡¼¥É amin(){ string ¥¯¥é¥¹Ì¾; //string¥¯¥é¥¹¤ÎÀë¸À getline(cin, s); //¥¹¥Ú¡¼¥¹¤Ë¤è¤ëcin¤Î½ªÎ»¤òËɤ°(ÉÔ´°Á´) }
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#include <iostream> #include <string> using namespace std; string get_line(); //1¹ÔÆþÎϤ¹¤ë´Ø¿ô¤Î¥×¥í¥È¥¿¥¤¥×Àë¸À int main(){ string s; //string¥¯¥é¥¹¤Î¸Æ¤Ó½Ð¤· s = get_line(); //´Ø¿ô¤Ê¤Î¤Ç¤³¤ÎÍͤ˻Ȥ¦ cout<<"("<<s<<")"<<endl; } /*1¹ÔÆþÎϤ¹¤ë´Ø¿ô*/ string get_line(){ string s; char c; while(1){ cin.get(c); //"get¥á¥ó¥Ð´Ø¿ô"¤Îcin¤Ø¤ÎÀë¸À ¡ù if(c=='\n')break; s += c; } return s; }
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#include<fstream>¡¡¡¡¡Ê¢¨iostream¤ò´Þ¤à¡Ë
#include <fstream> #include <string> using namespace std; int main(){ ifstream ¥¯¥é¥¹Ì¾; //¥Õ¥¡¥¤¥ë¤«¤é¤ÎÆɤ߹þ¤ß¤Î¤¿¤á¤Î¥ª¥Ö¥¸¥§¥¯¥ÈÀë¸À ¥¯¥é¥¹Ì¾.open("¥Õ¥¡¥¤¥ë̾.³ÈÄ¥»Ò"); //»ØÄê¥Õ¥¡¥¤¥ë¤ò³«¤¯ string s; while(!¥¯¥é¥¹Ì¾.eof.()){ //¶õÇò¤ÇÆɤ߹þ¤ß¤¬¤ª¤é¤ï¤Ê¤¤¤è¤¦¤Ëwhile¤ò»È¤¦ getline(¥¯¥é¥¹Ì¾,s); //¥Õ¥¡¥¤¥ë¤«¤é¤ÎÆɤ߹þ¤ß(¶õÇò¤Ç²þ¹Ô¤·¤Ê¤¤¤è¤¦¤Ë)¢ª¥¯¥é¥¹Ì¾ cout<<s; } ¥¯¥é¥¹Ì¾.close(); //¥Õ¥¡¥¤¥ë¤òÊĤ¸¤ë }
#include <fstream> #include <string> using namespace std; string get_line(); //¥¡¼¥Ü¡¼¥ÉÆþÎϤΤ¿¤á¤Î¥×¥í¥È¥¿¥¤¥×Àë¸À int main(){ ofstream ¥¯¥é¥¹Ì¾; //¥Õ¥¡¥¤¥ë¤Ø¤Î½ñ¤¹þ¤ß¤Î¤¿¤á¤Î¥ª¥Ö¥¸¥§¥¯¥ÈÀë¸À ¥¯¥é¥¹Ì¾.open("¥Õ¥¡¥¤¥ë̾.³ÈÄ¥»Ò"); //»ØÄê¥Õ¥¡¥¤¥ë¤ò³«¤¯ string s; while((s=get_line())!="/end") //¶õÇò¤Ç½ñ¤¹þ¤ß¤¬¤ª¤é¤ï¤Ê¤¤¤è¤¦¤Ëwhile¤ò»È¤¦ ¥¯¥é¥¹Ì¾<<s<<endl; //¥Õ¥¡¥¤¥ë¤Ø½ñ¤¹þ¤ß ¥¯¥é¥¹Ì¾.close(); //¥Õ¥¡¥¤¥ë¤òÊĤ¸¤ë } /*1¹ÔÆþÎϤ¹¤ë´Ø¿ô*/ string get_line(){ string s; char c; while(1){ cin.get(c); if(c=='\n')break; s += c; } return s; }
¢¨ ifstream ¥¯¥é¥¹Ì¾; ¥¯¥é¥¹Ì¾.open(¥Õ¥¡¥¤¥ë̾.³ÈÄ¥»Ò); ¢ ifstream ¥¯¥é¥¹Ì¾(¥Õ¥¡¥¤¥ë̾.³ÈÄ¥»Ò); ¢¨ofstream¤âƱÍÍ
if(¥¯¥é¥¹Ì¾.is_open()==false){ //is_open()¢ª¥Õ¥¡¥¤¥ë¤¬¥ª¡¼¥×¥ó¤·¤¿¤«¤É¤¦¤«³Îǧ¤¹¤ë¥á¥ó¥Ð´Ø¿ô cerr<<"¥Õ¥¡¥¤¥ë¤¬Â¸ºß¤·¤Þ¤»¤ó!\n"; return; }¢ª¥¨¥é¡¼¤òɽ¼¨¤µ¤»¤ë
#include <vector> //vector¥¯¥é¥¹¤Î¥¤¥ó¥¯¥ë¡¼¥É ¡Ä using namespase std; int main(void){ ¡Ä vector<int> v; //¥ª¥Ö¥¸¥§¥¯¥ÈÀë¸À¡Ê vector<¥Ç¡¼¥¿·¿> ¥ª¥Ö¥¸¥§¥¯¥È̾; ¡Ë ¡Ä v.push_back(100); //¥Ç¡¼¥¿¤ÎÄɲá£ÆþÎϤ¹¤ë¤¿¤Ó¤ËÇÛÎó¤Î¿ô¤¬Áý¤¨¤Æ¤¤¤¯¥¤¥á¡¼¥¸¡£¡Ê¥ª¥Ö¥¸¥§¥¯¥È̾.puch_back(ÄɲÃÊÑ¿ô);¡Ë ¡Ä cout << v[1] <<endl; //¥Ç¡¼¥¿¤Î¸Æ¤Ó½Ð¤·¡£¡Ê¥ª¥Ö¥¸¥§¥¯¥È̾[¥Ç¡¼¥¿¤Î½çÈÖ];¡Ë ¡Ä cout << v.size() << endl; //¥Ç¡¼¥¿¿ô¤Îɽ¼¨¡£¡Êsize¥á¥ó¥Ð´Ø¿ô¡Ë ¡Ä for(i=0;i<v.size();i++) cout<<v[i]<<endl; //¤¹¤Ù¤Æ¤Î¥Ç¡¼¥¿¤Îɽ¼¨¡£ ¡Ä whire(cin.good()){ double data; cin >> data; if(cin.good()) v.push_back(data); } //¿ôÃͰʳ°¤òÆþÎϤ¹¤ë¤Þ¤ÇÆþÎϤµ¤»¤ë¡£ ¡Ä } ¢¨cin.good();¢ª¥á¥ó¥Ð´Ø¿ô¡£ÆþÎϤµ¤ì¤¿Ãͤ¬¿ôÃͤǤ¢¤ë»þtrue¡£¤½¤ì°Ê³°¡Êʸ»ú¤Ê¤É¡Ëfalse¡£
#include <iostream> #include <vector> using namespace std; int main(){ vector<int> v; int i, data, sum; cout<< "¿ôÃͰʳ°¤òÆþÎϤ·¤Æ¡¢½ªÎ»¡£"<<endl; while(cin.good()){ cin>>data; if(cin.good()) v.push_back(data); } for(sum=0,i=0; i<v.size(); i++){ sum += v[i]; cout<< v[i] <<"-"<< sum << endl; } } ¢¨ÆþÎϤ·¤¿Ãͤò¹ç·×¤·¤Æ¤¤¤¯¥×¥í¥°¥é¥à¡£¡Ê¿ôÃͰʳ°¤òÆþÎϤǽªÎ»¡Ë
vector<int>::iterator p; //(·Á¼°¡§vector<·¿Ì¾>::iterator È¿Éü»Ò̾) p=v.being; //vector¥¯¥é¥¹¤Î¥á¥ó¥Ð´Ø¿ô¡£¥Ç¡¼¥¿¤ÎÀèƬ¤ò»Ø¤¹¡£¡Ê¥¨¥é¡¼¤Î´í¸±ËÉ»ß¡Ë ¢ vector<int>::iterator p=v.being; //¢¬¤ÈƱ¤¸¡£
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*p ¢ª¥³¥ó¥Æ¥Ê¤Î¸½ºß°ÌÃ֤Υǡ¼¥¿¡£ p++ ¢ªÈ¿Éü»Ò¤ò£±¤Ä¼¡¤Î¥Ç¡¼¥¿¤Ø°ÜÆ°¡£ p+=10 ¢ªÈ¿Éü»Ò¤ò10¸Ä¼¡¤Î¥Ç¡¼¥¿¤Ø°ÜÆ°¡£ p-- ¢ªÈ¿Éü»Ò¤ò£±¤ÄÁ°¤Î¥Ç¡¼¥¿¤Ø°ÜÆ°¡£ ¡Ê¢¨p:È¿Éü»Ò̾¡Ë
v.end()¢ª¥Ç¡¼¥¿¤ÎËöü¤Îɽ¼¨¡£¡Ê°ÜÆ°¤Ç¤³¤ì¤ò½Ð¤Ê¤¤¤è¤¦¤Ëµ¤¤ò¤Ä¤±¤ë¡Ë
v.pop_break(); //¸åÈø¥Ç¡¼¥¿¤Î¾Ãµî v.erase(È¿Éü»Ò); //È¿Éü»Ò¤Î¼¨¤¹¥Ç¡¼¥¿¤Î¾Ãµî¡Ê¾Ãµî¤·¤¿¥Ç¡¼¥¿¤Î¼¡¤Î¥Ç¡¼¥¿¤ò»Ø¤¹È¿Éü»Ò¤òÊÖ¤¹¡Ë
#include <map> ¡Ä int main(void){ map<string,int> m; ¡¡¡¡¡¡¡¡//¥ª¥Ö¥¸¥§¥¯¥ÈÀë¸À¡Êmap<ʸ»ú·¿,¿ôÃÍ·¿>map̾¡Ë pair<string,int> g; //¥Ç¡¼¥¿ÆþÎÏÍѤΥª¥Ö¥¸¥§¥¯¥ÈÀë¸À¡Ê¥¡¼¤È¥Ç¡¼¥¿¤ÎÁÈ¡Ë ¡Ä g.first="test"; g.second=100; //pair¥¯¥é¥¹¤Ø¤ÎÃͤÎÆþÎÏ¡Ê¥¡¼¤È¥Ç¡¼¥¿¡Ë m.insert(g); //¥Ç¡¼¥¿¤ÎÁÞÆþ }
m.insert(pair<string,int>g("test",100));
n["orange"]=200; //¥¡¼¤Ç»ØÄꤵ¤ì¤¿¥Ç¡¼¥¿¤Ë¿ôÃÍ200¤òÆþÎÏ
map<string,int>m; map<string,int>::iterator p=m.deing(); //È¿Éü»Ò¤òÍѤ¤¤¿¥¢¥¯¥»¥¹¤ò¤â¤È¤á¤ë¡£ p->first; //¥¡¼(ÊÑ¿ô)¢ª¡Ê(*p).first¡Ë p->second; //¿ôÃÍ¡Ê¡·¡Ë¢ª¡Ê(*p).second¡Ë
m.erase(m.find("pine")); //¥Ç¡¼¥¿¤Î¾Ãµî¡Ê¥Ç¡¼¥¿¤ÎÈ¿Éü»Ò¤Î¸¡º÷(¥¡¼)¡Ë;
typrdef map<string,int> pricelist; //º£¸å¡¢map<string,int> ¢ª pricelist¡¡¤È¤Ç¤¤ë
#include <iostream> using namespace std; class myclass{ //myclass¥¯¥é¥¹¤ÎÀë¸À public: //¥¢¥¯¥»¥¹»ØÄê»Ò int x,y; //¥á¥ó¥ÐÊÑ¿ô }; int main(void){ myclass mc; //¥ª¥Ö¥¸¥§¥¯¥ÈÀë¸À mc.x=100; //¥ª¥Ö¥¸¥§¥¯¥Èmc¤Î¥á¥ó¥ÐÊÑ¿ôx¤Ø¤Î¥¢¥¯¥»¥¹ mc.y=200; //¥ª¥Ö¥¸¥§¥¯¥Èmc¤Î¥á¥ó¥ÐÊÑ¿ôy¤Ø¤Î¥¢¥¯¥»¥¹ cout<<mc.x*mc.y<<endl; }
class myclass{ public: int x,y; void locate(int x1,int y1) //¥á¥ó¥Ð´Ø¿ô¤ÎÀë¸À¡Êvoid ´Ø¿ô̾(ÄêµÁÊÑ¿ô);¡Ë }; void myclass::locate(int x1,int y1){ //myclass¥¯¥é¥¹¤Îlocate¥á¥ó¥Ð´Ø¿ô¤ÎÄêµÁ x=x1; //Ãí°Õ¡¨¥á¥ó¥ÐÊÑ¿ô¤Ï¡¢Æ±¥¯¥é¥¹¤Î¥á¥ó¥Ð´Ø¿ôÆâ¤Ç¤Ï¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤È¤·¤Æ°·¤¦ y=y1; }
class ¥¯¥é¥¹Ì¾{ //private: ¤¬¾Êά¤µ¤ì¤Æ¤¤¤ë¡£ Èó¸ø³«¥á¥ó¥ÐÊÑ¿ô; Èó¸ø³«¥á¥ó¥Ð´Ø¿ô; public: Èó¸ø³«¥á¥ó¥ÐÊÑ¿ô; Èó¸ø³«¥á¥ó¥Ð´Ø¿ô; }
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int *array; //¥Ý¥¤¥ó¥¿¤ÎÀë¸À(array) array=new int[n]; //¥Ý¥¤¥ó¥¿¤òÇÛÎó¤È¤·¤Æ»ÈÍÑ¡£ÇÛÎóÈÖ¹æ"i"¤òÀë¸À ¡Ä delete [] array; //³ÎÊÝ¥á¥â¥ê¤Î³«Êü
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#include<iostream> using namespace std; class intlist { //intlist¥¯¥é¥¹¤ÎÀë¸À int *list; //int¤Î¥ê¥¹¥È int len; //²¿¸Äʬ¤ÎÎΰè¤ò³ÎÊݤ·¤¿¤«³Ð¤¨¤Æ¤ª¤¯´Ø¿ô public: void init(int length); //¥á¥â¥ê¤òÊá³Í¤¹¤ë¥á¥ó¥Ð´Ø¿ô void fin(); //¥á¥â¥ê¤òÊá³Í¤¹¤ë¥á¥ó¥Ð´Ø¿ô void set(int index, int value); //ÃͤòÀßÄꤹ¤ë´Ø¿ô int get(int index); //ÃͤòÆÀ¤ë´Ø¿ô }; void intlist::init(int length){ //»ØÄꤷ¤¿Ê¬¤Îint·¿Îΰè¤Î³ÎÊÝ list=new int[length]; len=length; cout<<len<<"¸Äʬ¤Î¥Ç¡¼¥¿¤òÊá³Í¤·¤Þ¤·¤¿\n"; } void intlist::fin(){ //Êá³Í¤µ¤ì¤¿¥á¥â¥ê¤Î³«Êü delete [] list; cout<<len<<"¸Ä¤Î¥á¥â¥ê¤ò²òÊü¤·¤Þ¤·¤¿\n"; } void intlist::set(int index, int value){ //»ØÄꤵ¤ì¤¿Ãͤò»ØÄêÈÖÌܤ˽ñ¤¹þ¤ß if(0<=index && index<len) list[index]=value; else cerr<<index<<"¤Ï¡¢Èϰϳ°¤Ç¤¹\n"; } int intlist::get(int index){ //»ØÄêÈÖ¿ô¤Î¥Ç¡¼¥¿¤òÊÖ¤¹ if(0<=index && index<len) return list[index]; else{ cerr<<index<<"¤Ï¡¢Èϰϳ°¤Ç¤¹\n"; return 0; } } int main(){ intlist il; il.init(10); il.set(0,10); il.set(1,10); il.set(2,20); il.set(10,100); cout<< il.get(0) + il.get(1) + il.get(2)<<endl; il.fin(); }
#include<iostream> using namespace std; class intlist { int *list; int len;¤¯´Ø¿ô public: intlist(int length); //½ñ¤´¹¤¨1¡¨¥³¥ó¥¹¥È¥é¥¯¥¿ ~intlist(); //½ñ¤´¹¤¨2¡¨¥Ç¥¹¥È¥é¥¯¥¿ void set(int index, int value); int get(int index); }; void intlist::intlist(int length){ //½ñ¤´¹¤¨3 list=new int[length]; len=length; cout<<len<<"¸Äʬ¤Î¥Ç¡¼¥¿¤òÊá³Í¤·¤Þ¤·¤¿\n"; } void intlist::~intlist(){ //½ñ¤´¹¤¨4 delete [] list; cout<<len<<"¸Ä¤Î¥á¥â¥ê¤ò²òÊü¤·¤Þ¤·¤¿\n"; } void intlist::set(int index, int value){ if(0<=index && index<len) list[index]=value; else cerr<<index<<"¤Ï¡¢Èϰϳ°¤Ç¤¹\n"; } int intlist::get(int index){ if(0<=index && index<len) return list[index]; else{ cerr<<index<<"¤Ï¡¢Èϰϳ°¤Ç¤¹\n"; return 0; } } int main(){ intlist il(10); //½ñ¤´¹¤¨5¡¨°ø¿ô¤Î»ØÄê¤ÎÄɲà //½ñ¤´¹¤¨6¡¨¾Êά il.set(0,10); il.set(1,10); il.set(2,20); il.set(10,100); cout<< il.get(0) + il.get(1) + il.get(2)<<endl; //½ñ¤´¹¤¨7¡¨¾Êά }
class A{ public: void foo() }; void A::foo(){ cout<<"¥¯¥é¥¹A¤Î¥á¥ó¥Ð´Ø¿ô"; }¢
class A{ public: void foo(){ cout<<"¥¯¥é¥¹A¤Î¥á¥ó¥Ð´Ø¿ô"; }
class sample{ }; sample obj; //¥°¥í¡¼¥Ð¥ë¤ÊÀë¸À int main(){ }
#include <iostream> #include <new> //Unix¤Î¤ßɬÍ× using namespace std; int main(){ int *p; //¤Þ¤º¤Ï¡¢*p¤òÀë¸À p=new int; //int·¿¤ÎÎΰè¤òÊá³Í(ÇÛÎó¤â²Äǽ) *p=100; //³ÎÊݤµ¤ì¤¿Îΰè¤ËÂåÆþ cout<<"¥¢¥É¥ì¥¹"<<p<<"¤Ë¡¢ÃÍ"<<*p<<"¤¬½ñ¤¹þ¤Þ¤ì¤Þ¤·¤¿¡£\n"; delete p; //³ÎÊݤµ¤ì¤¿Îΰè¤Î³«Êü }
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#ifndef INCLUDE_myclass //¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤Î·Á¼°Åª½ñ¼°¡(myclass¢ª¥¯¥é¥¹Ì¾) #define INCLUDE_myclass //¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤Î·Á¼°Åª½ñ¼°¢ class myclass{ public: myclass(); }; #endif //¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤Î·Á¼°Åª½ñ¼°£
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#include<iostream> #include"myclass.h" //¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤ò¥¤¥ó¥¯¥ë¡¼¥É susing namespase std; myclass::myclass(){ cout<<"myclass¥¯¥é¥¹¤Ç¤¹"; }
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#include"myclass.h" int main{ myclass obj; }
g++ main.cpp myclass.cpp
class ÇÉÀ¸¥¯¥é¥¹;public ´ðÄ쥯¥é¥¹{ Äɲ乤륯¥é¥¹Í×ÁÇ; };
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#ifndef INCLUDE_position #define INCLUDE_position class position{ int x,y; public: void locate(int x1, int y1); void show(); }; class position3D:public position{ int h; public: void height(int h1); void show_height(); }; #endif
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class position3D{ int i; position h; //¥ª¥Ö¥¸¥§¥¯¥ÈÀë¸À public: void locate(int x1, int y1); //´Ø¿ô¤ÎÀë¸À¤Ï¡¢·Ñ¾µ¤·¤Æ¤¤¤ë¤ï¤±¤Ç¤Ï¤Ê¤¤¤Î¤Ç¤·¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ void show(); void height(int h1); void show_height(); };
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void position3D:locate(int x1, int y1){ p.locate(x1,y1); //¥ª¥Ö¥¸¥§¥¯¥ÈÀë¸À¤ò¤·¤Æ¤¤¤ë¤Î¤Ç¡¢¥á¥ó¥Ð´Ø¿ô¤òÄêµÁ¤È¤·¤Æ¤½¤Î¤Þ¤Þ»È¤¨¤ë¡£ }
delive d; d.base::show();
class derive : public bace{ public derive() : bace(0){ }; //; bace(0)¢ª¥¤¥Ë¥·¥ã¥é¥¤¥¶¡Êbace¥¯¥é¥¹¤Î¥³¥ó¥È¥é¥¯¥¿¤ËÂФ·¤Æ°ú¿ô¤òÊÖ¤¹¡£¡Ë };