View Compilation Error

0_0_28689984_18558.cpp: In function 'int main()':
0_0_28689984_18558.cpp:17:1: error: expected primary-expression before '}' token
 }
 ^
0_0_28689984_18558.cpp: At global scope:
0_0_28689984_18558.cpp:25:1: error: expected unqualified-id before 'if'
 if(n==0) {
 ^
0_0_28689984_18558.cpp:31:1: error: expected unqualified-id before 'while'
 while(n>0) {
 ^
0_0_28689984_18558.cpp:41:1: error: 'i' does not name a type
 i=i-1;
 ^
0_0_28689984_18558.cpp:43:1: error: expected unqualified-id before 'for'
 for(j=i; j>=0; j--) {
 ^
0_0_28689984_18558.cpp:43:10: error: 'j' does not name a type
 for(j=i; j>=0; j--) {
          ^
0_0_28689984_18558.cpp:43:16: error: 'j' does not name a type
 for(j=i; j>=0; j--) {
                ^