vector string及び配列使用
2914 ワード
vectorを使って文字列を入力し、文字列を出力します.
配列の値を別の配列に与えます.
ポインタの使用:
#include
#include
#include
using namespace std;
int main()
{
vector ivec;
ivec.push_back("wo");
ivec.push_back("shi");
for (vector::iterator ix =ivec.begin(); ix != ivec.end(); ix++)
{
cout << *ix;
}
cout << endl;
for (vector::size_type ix = 0; ix != ivec.size(); ix++)
{
cout << ivec[ix];
}
int ival;
while (cin >> ival&&ival != 1)
{
cout << "haha "<< endl;
}
}
配列の値を別の配列に与えます.
#include
#include
using namespace std;
int main()
{
int a[5] = { 1, 2, 4, 5, 6 }, b[5];
for (int i = 0; i <= 4; i++)
{
b[i] = a[i];
}
for (int i = 0; i <= 4; i++)
{
cout << b[i] << " ";
}
cout << endl;
vector ivec1(10, 2);
vector ivec2;
/*for (vector::iterator ix = ivec1.begin(); ix != ivec1.end(); ix++)
{
ivec2.push_back(*ix);
}*/
for (vector::size_type ix=0; ix != ivec1.size(); ix++)
{
ivec2.push_back(ivec1[ix]);
}
for (vector::iterator ix = ivec2.begin(); ix != ivec2.end(); ix++)
{
cout << ivec2[*ix]<
ポインタの使用:
#include
using namespace std;
#include
int main()
{
string s = ("i love you");
string *p = &s;
cout << s << endl << *p << endl;
int ival = 1024, ival2 = 2048;
int *p1=&ival, *p2=&ival2;
*p1 = *p2;
cout << *p1 << endl << *p2 << endl;
int &ri = ival, &ri2 = ival2;
ri = ri2;
cout << ri << endl << ri2 << endl<
数字を入力して出力する:#include
#include
#include
using namespace std;
int main()
{
vector ivec;
int k;
while (cin >> k)
{
ivec.push_back(k);
}
int *p = new int[ivec.size()];
int *p1 = p;
for (vector::iterator iter = ivec.begin(); iter != ivec.end(); iter++, p1++)
{
*p1 = *iter;
}
for (vector::iterator iter = ivec.begin(); iter != ivec.end(); iter++)
{
cout << *iter << " ";
}
cout << endl;
for (int i = 0; i <= 10; i++)
{
cout << p[i]<
#include
#include
using namespace std;
int main()
{
const int k = 2;
int a[k];
for (size_t i = 0; i > a[i];
}
vector ivec;
for (vector::size_type ix = 0; ix != k; ix++)
{
ivec.push_back(a[ix]);
}
for (vector::size_type ix = 0; ix != k; ix++)
{
cout << ivec[ix] << " ";
}
cout << endl;
}