0_0_15943100_11232.cpp: In function 'int main()':
0_0_15943100_11232.cpp:6:21: error: 'scanf' was not declared in this scope
while(scanf("%d",&n)!=-1)
^
0_0_15943100_11232.cpp:14:20: error: 'printf' was not declared in this scope
printf("%d\n",num);
^
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