View Compilation Error

0_0_39341934_14729.cpp: In function 'int read()':
0_0_39341934_14729.cpp:3:14: error: 'getchar' was not declared in this scope
    3 |     char c = getchar();
      |              ^~~~~~~
0_0_39341934_14729.cpp:1:1: note: 'getchar' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | inline int read() {
0_0_39341934_14729.cpp:4:13: error: 'isdigit' was not declared in this scope
    4 |     while (!isdigit(c)) {if (c == '-') f = -1; c = getchar();}
      |             ^~~~~~~
0_0_39341934_14729.cpp:5:12: error: 'isdigit' was not declared in this scope
    5 |     while (isdigit(c)) x = (x << 1) + (x << 3) + (c ^ '0'), c = getchar();
      |            ^~~~~~~