View Compilation Error

0_0_15394943_21339.cpp: In function 'int main()':
0_0_15394943_21339.cpp:5:28: error: 'n' was not declared in this scope
     while(~scanf("%d%d%d",&n,&k,&m))
                            ^
0_0_15394943_21339.cpp:5:31: error: 'k' was not declared in this scope
     while(~scanf("%d%d%d",&n,&k,&m))
                               ^
0_0_15394943_21339.cpp:5:34: error: 'm' was not declared in this scope
     while(~scanf("%d%d%d",&n,&k,&m))
                                  ^