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| Řádek 1: |
Řádek 1: |
| [[C plus plus Bc. 18 cpp]] | | [[C plus plus Bc. 18 cpp]] |
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| #include <iostream>
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| #include <sstream>
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|
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| std::istream& komentar(std::istream& inp);
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|
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| int main()
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| {
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| using namespace std;
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|
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| istringstream
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| data("/* vstup obsahuje souradnice x a y */ "
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| "/* x */ 123.54 /* y */ 345.53 "
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| " 738.34 542.43 433.22 543.98 "
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| " 832.64 343.25 534.17 541.23 "
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| " 892,83 336.34 /* konec dat */ ");
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|
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| double x, y;
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| double sx = 0, sy = 0;
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| int pocet = 0;
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|
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| // funkce komentar je definovana jako manipulator bez parametru
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| while (data >> komentar >> x >> komentar >> y)
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| {
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| cout << x << " " << y << endl;
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| sx += x;
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| sy += y;
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| pocet++;
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| }
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|
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| if (pocet)
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| cout << "\nteziste: " << sx/pocet << " " << sy/pocet << endl;
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| else
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| cout << "na vstupu nejsou zadne souradnice\n";
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| }
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| std::istream& komentar(std::istream& inp)
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| {
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| char z;
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| while (inp >> z)
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| {
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| // komentar zacina dvoji znaku /*
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| if (z != '/' || inp.peek() != '*')
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| {
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| inp.putback(z);
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| return inp;
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| }
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|
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| inp.get(); // nactu znak '*'
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|
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| // komentar konci dvojici znaku */
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| while (inp >> z)
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| if (z == '*' && inp.peek() == '/')
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| {
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| inp.get(); // nactu znak '/'
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| break; // hledam dalsi komentar
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| }
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| }
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|
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| return inp;
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| }
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|
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| 123.54 345.53
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| 738.34 542.43
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| 433.22 543.98
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| 832.64 343.25
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| 534.17 541.23
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|
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| teziste: 532.382 463.284
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|
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| [ [[C plus plus Bc. 18 | Zpět]] ]
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