View Compilation Error

0_0_39255817_31408.cpp: In function 'int main()':
0_0_39255817_31408.cpp:7:30: error: 'v' was not declared in this scope
    7 |         scanf("%d%d%d", &n, &v, &w); t = 0;
      |                              ^
0_0_39255817_31408.cpp:7:34: error: 'w' was not declared in this scope
    7 |         scanf("%d%d%d", &n, &v, &w); t = 0;
      |                                  ^