| 1 | #include "StringUtils.hpp" | 
| 2 |  | 
| 3 | string UpperCase(const string& S) { | 
| 4 | string uc = S; | 
| 5 | unsigned int n = uc.size(); | 
| 6 | for (unsigned int j = 0; j < n; j++) { | 
| 7 | char sj = uc[j]; | 
| 8 | if (sj >= 'a' && sj <= 'z') uc[j] = (char)(sj - ('a' - 'A')); | 
| 9 | } | 
| 10 | return uc; | 
| 11 | } | 
| 12 |  | 
| 13 | string LowerCase(const string& S) { | 
| 14 | string lc = S; | 
| 15 | unsigned int n = lc.size(); | 
| 16 | for (unsigned int j = 0; j < n; j++) { | 
| 17 | char sj = lc[j]; | 
| 18 | if (sj >= 'A' && sj <= 'Z') lc[j] = (char)(sj + ('a' - 'A')); | 
| 19 | } | 
| 20 | return lc; | 
| 21 | } |