View Compilation Error

0_0_30189261_20985.cpp: In function 'int main(int, char**)':
0_0_30189261_20985.cpp:104:9: error: expected unqualified-id before 'case'
     int case,n;
         ^
0_0_30189261_20985.cpp:105:17: error: expected primary-expression before 'case'
     scanf("%d",&case);
                 ^
0_0_30189261_20985.cpp:106:11: error: expected primary-expression before 'case'
     while(case--){
           ^
0_0_30189261_20985.cpp:106:11: error: expected ')' before 'case'
0_0_30189261_20985.cpp:106:17: error: expected primary-expression before ')' token
     while(case--){
                 ^
0_0_30189261_20985.cpp:106:11: error: case label '<expression error>' not within a switch statement
     while(case--){
           ^
0_0_30189261_20985.cpp:106:17: error: expected ':' before ')' token
     while(case--){
                 ^
0_0_30189261_20985.cpp:106:17: error: expected primary-expression before ')' token