码:
#include <iostream>
#include <iomanip>
using namespace std;
class Ascii_output {
public:
void run() {
print_ascii();
}
private:
void print_ascii() {
int i, j; // i is used to print the first element of each row
// j is used to print subsequent columns of a given row
char ch; // ch stores the character which is to be printed
cout << left;
for (i = 32; i < 64; i++) { // 33 rows are printed out (64-32+1)
ch = i;
if (ch != '\n') // replaces any newline printouts with a blank character
cout << setw(3) << i << " " << setw(6) << ch;
else
cout << setw(3) << i << " " << setw(6);
for (j = 1; j < 7; j++) { // decides the amount of columns to be printed out, "j < 7" dictates this
ch += 32*j; // offsets the column by a multiple of 32
if (ch != '\n') // replaces any newline printouts with a blank character
cout << setw(3) << i+(32*j) << " " << setw(6) << ch;
else
cout << setw(3) << i+(32*j) << " " << setw(6);
}
cout << endl;
}
}
};
输出结果:
为什么我没有得到适当缩进的输出,并且在 96 到 255 的值处出现了奇怪的字符?
a
的 ASCII 码是97,而不是161。我猜这是问题的根源,你打印出一个数字,但大多数情况下并不是该数字对应的正确字母。 - Some programmer dudestd::isprint
的函数来确保字符是可打印的。例如,ASCII 127 是不可打印的,可能会导致格式错误。 - Some programmer dude