View Compilation Error

0_0_38768228_27718.cpp:8:10: error: stray '\243' in program
    8 |     while<a3><a8>n--<a3><a9>
      |          ^~~~
0_0_38768228_27718.cpp:8:11: error: stray '\250' in program
    8 |     while<a3><a8>n--<a3><a9>
      |              ^~~~
0_0_38768228_27718.cpp:8:15: error: stray '\243' in program
    8 |     while<a3><a8>n--<a3><a9>
      |                     ^~~~
0_0_38768228_27718.cpp:8:16: error: stray '\251' in program
    8 |     while<a3><a8>n--<a3><a9>
      |                         ^~~~
0_0_38768228_27718.cpp: In function 'int main()':
0_0_38768228_27718.cpp:8:12: error: expected '(' before 'n'
    8 |     while（n--）
      |            ^
      |            (
0_0_38768228_27718.cpp:8:15: error: expected ')' before '{' token
    8 |     while（n--）
      |            ~  ^
      |               )
    9 |     {  scanf("%lld %lld",&a,&b)!=EOF)
      |     ~          
0_0_38768228_27718.cpp:9:37: error: expected ';' before ')' token
    9 |     {  scanf("%lld %lld",&a,&b)!=EOF)
      |                                     ^