View Compilation Error

0_0_40071182_9149.cpp: In function 'void calculate(char*)':
0_0_40071182_9149.cpp:32:26: error: 'atoi' was not declared in this scope
   32 |             printf("%d", atoi(parse1) + atoi(parse3));
      |                          ^~~~
0_0_40071182_9149.cpp:34:26: error: 'atoi' was not declared in this scope
   34 |             printf("%d", atoi(parse1) - atoi(parse3));
      |                          ^~~~