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最新推荐文章于 2024-08-22 23:55:48 发布

Aric

最新推荐文章于 2024-08-22 23:55:48 发布

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int atohex(char *p, int cnt) { int val = 0; char ch = 0; int pow = 1; for(int i=cnt; i>0; i--) { int v = 0; ch = *(p+i-1); if('A' <= ch && 'Z' >= ch) { v = 10 + (ch - 'A'); }else if('a' <= ch && 'z' >= ch) { v = 10 + (ch - 'a'); }else if('0' <= ch && '9' >= ch) v = ch - '0'; if(i == cnt) pow = 1; else pow *= 16; val += v * pow; } return val; }