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  1. #include <iostream>
  2. #include <regex>
  3.  
  4. using namespace std;
  5.  
  6. const std::string CpuInfo =
  7.   "Architecture:        x86_64\n"
  8.   "CPU op-mode(s):      32-bit, 64-bit\n"
  9.   "Byte Order:          Little Endian\n"
  10.   "Address sizes:       43 bits physical, 48 bits virtual\n"
  11.   "CPU(s):              12\n"
  12.   "On-line CPU(s) list: 0-11\n"
  13.   "Thread(s) per core:  2\n"
  14.   "Core(s) per socket:  6\n"
  15.   "Socket(s):           1\n"
  16.   "NUMA node(s):        1\n"
  17.   "Vendor ID:           AuthenticAMD\n"
  18.   "CPU family:          23\n"
  19.   "Model:               1\n"
  20.   "Model name:          AMD Ryzen 5 1600 Six-Core Processor\n"
  21.   "Stepping:            1\n"
  22.   "CPU MHz:             2482.474\n"
  23.   "CPU max MHz:         3200.0000\n"
  24.   "CPU min MHz:         1550.0000\n"
  25.   "BogoMIPS:            6387.25\n"
  26.   "Virtualization:      AMD-V\n"
  27.   "L1d cache:           32K\n"
  28.   "L1i cache:           64K\n"
  29.   "L2 cache:            512K\n"
  30.   "L3 cache:            8192K\n"
  31.   "NUMA node0 CPU(s):   0-11";
  32.  
  33. int main() {
  34.   std::regex reg_ex("CPU MHz:\\s+([^\\n]+)\\n?");
  35.   std::smatch reg_match;
  36.   std::string result = (std::regex_search(CpuInfo, reg_match, reg_ex)) ? 
  37.     reg_match[1] : std::string("Not found!"); 
  38.   std::cout << "CPU MHz: " << result << std::endl;
  39.   return 0;
  40. }
Success #stdin #stdout 0s 4352KB
comments (?)
stdin 
Standard input is empty
stdout 
CPU MHz: 2482.474
https://ideone.com/ZOeERy
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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