in_addr 转换为 string(char*)

char* hexToCharIP(struct in_addr addrIP) { char* ip; unsigned int intIP; memcpy(&intIP, &addrIP,sizeof(unsigned int)); int a = (intIP >> 24) & 0xFF; int b = (intIP >> 16) & 0xFF; int c = (intIP >> 8) & 0xFF; int d = intIP & 0xFF; if((ip = (char*)malloc(16*sizeof(char))) == NULL) { return NULL; } sprintf(ip, "%d.%d.%d.%d", d,c,b,a); return ip; }

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