View Compilation Error

0_0_38677921_20652.cpp: In function 'void work()':
0_0_38677921_20652.cpp:15:10: error: 'i' was not declared in this scope
   15 |     for (i,1,n) {
      |          ^
0_0_38677921_20652.cpp:18:5: error: expected primary-expression before 'if'
   18 |     if (!flag && k == 1) {
      |     ^~
0_0_38677921_20652.cpp:17:6: error: expected ';' before 'if'
   17 |     }
      |      ^
      |      ;
   18 |     if (!flag && k == 1) {
      |     ~~
0_0_38677921_20652.cpp:18:5: error: expected primary-expression before 'if'
   18 |     if (!flag && k == 1) {
      |     ^~
0_0_38677921_20652.cpp:17:6: error: expected ')' before 'if'
   17 |     }
      |      ^
      |      )
   18 |     if (!flag && k == 1) {
      |     ~~
0_0_38677921_20652.cpp:15:9: note: to match this '('
   15 |     for (i,1,n) {
      |         ^