View Compilation Error

0_0_31856820_19165.cpp: In function 'int main()':
0_0_31856820_19165.cpp:9:24: error: 'c' was not declared in this scope
     while(~scanf("%d",&c)){
                        ^
0_0_31856820_19165.cpp:11:24: error: expected primary-expression before '%' token
             scanf("%d",%n);
                        ^