View Compilation Error

0_0_39290820_12079.cpp:6:24: error: stray '\243' in program
    6 |    while(scanf("%d",&n)<a3><a1>=EOF){
      |                        ^~~~
0_0_39290820_12079.cpp:6:25: error: stray '\241' in program
    6 |    while(scanf("%d",&n)<a3><a1>=EOF){
      |                            ^~~~
0_0_39290820_12079.cpp: In function 'int main()':
0_0_39290820_12079.cpp:6:15: error: lvalue required as left operand of assignment
    6 |    while(scanf("%d",&n)！=EOF){
      |          ~~~~~^~~~~~~~~