how to directly convert char to numbers?

Convert decimal numerals to hexadecimal:char c(int k) ?

• this is how far i got i seriously need help char c(int k) { assert (k >= 0 && k <= 15); if (k < 10) return char(k + '0'); return char(k - 10 + 'a'); } string s(int n) { if (n == 0) return string(1,'0'); string s; while (n > 0) { s = string(1,c(n% 16)) + s; n /= 16; } return s; } donno wat's next ?? doesnt compile and need a project methdology

• Answer:

  You're completely wrong, your code makes no sense. Read the textbook.