Accepted
foo.cc: In function 'int main()':
foo.cc:5:8: warning: unused variable 'num' [-Wunused-variable]
5 | int a,num=0,n=1;
| ^~~
foo.cc:5:14: warning: unused variable 'n' [-Wunused-variable]
5 | int a,num=0,n=1;
| ^
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