View Compilation Error

0_0_18397160_23646.cpp: In function 'int main()':
0_0_18397160_23646.cpp:38:24: error: 'n' was not declared in this scope
         scanf("%d%d", &n, &p);
                        ^
0_0_18397160_23646.cpp:38:28: error: 'p' was not declared in this scope
         scanf("%d%d", &n, &p);
                            ^