#include <iostream> int main() { for ( unsigned day = 1, candy = 6; day < 31; ++day, candy += 5 ) std::cout << day << ' ' << candy << '\n' ; }
Standard input is empty
1 6 2 11 3 16 4 21 5 26 6 31 7 36 8 41 9 46 10 51 11 56 12 61 13 66 14 71 15 76 16 81 17 86 18 91 19 96 20 101 21 106 22 111 23 116 24 121 25 126 26 131 27 136 28 141 29 146 30 151