View Compilation Error

0_0_33417534_22973.cpp:3:16: error: variable or field 'mergeSort' declared void
 void mergeSort(ll start,ll mid,ll end);
                ^
0_0_33417534_22973.cpp:3:16: error: 'll' was not declared in this scope
0_0_33417534_22973.cpp:3:25: error: 'll' was not declared in this scope
 void mergeSort(ll start,ll mid,ll end);
                         ^
0_0_33417534_22973.cpp:3:32: error: 'll' was not declared in this scope
 void mergeSort(ll start,ll mid,ll end);
                                ^
0_0_33417534_22973.cpp: In function 'void merge(long long int, long long int)':
0_0_33417534_22973.cpp:13:28: error: 'mergeSort' was not declared in this scope
     mergeSort(start,mid,end);
                            ^