Created
January 2, 2019 07:58
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Padding with STL, "ios", "iomanip" on C++.
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// 左埋めパディング | |
// 必用なヘッダーインクルード | |
#include <ios> // std::left, std::right | |
#include <iomanip> // std::setw(int), std::setfill(char) | |
// macro 直後の要素をパディング | |
#define zero_pad(num) setfill('0') << std::right << setw(num) | |
#define space_pad(num) setfill(' ') << std::right << setw(num) | |
// std::left とすれば,右に '0' を埋めることができる | |
int main() { | |
// input | |
int a = 33, b = 5555, c = 67891; | |
// calculation | |
cout << zero_pad(0) << a << "\n"; | |
cout << zero_pad(2) << a << "\n"; | |
cout << zero_pad(4) << a << "\n"; | |
cout << zero_pad(4) << b << "\n"; | |
cout << zero_pad(6) << b << "\n"; | |
cout << zero_pad(10) << b << "\n"; | |
cout << zero_pad(3) << b << "\n"; | |
cout << zero_pad(5) << b << "\n"; | |
cout << zero_pad(10) << b << "\n"; | |
return 0; | |
} |
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