string to hex string in c language

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// 스트링을 16진수로 변경 void fnStr2Hex(char* out, char* in){ int idx; int ascii; int len = strlen(in); for(idx=0; idx<len; idx++){ sprintf(out+(idx*2), "%02x", in[idx]); } } // char hex[2] long getDecimal(char* hex){ long rtnVal; char end[4]; char *pEnd = end; rtnVal = strtol(hex, &pEnd, 16); return rtnVal; } // 스트링을 16진수로 변경 void fnHex2Str(char* out, char* in){ int idx; int outIdx; int ascii; char hex[3]; int len = strlen(in); for(idx=0; idx<len; idx+=2){ strncpy(hex, in+idx, 2); out[outIdx++] = getDecimal(hex); } }