Main.c: In function ‘main’:
Main.c:3:16: error: ‘n’ undeclared (first use in this function)
    3 |    scanf("%d",&n);
      |                ^
Main.c:3:16: note: each undeclared identifier is reported only once for each function it appears in
Main.c:5:11: warning: right-hand operand of comma expression has no effect [-Wunused-value]
    5 |    for(i=1,i<n,i++){
      |           ^
Main.c:5:19: error: expected ‘;’ before ‘)’ token
    5 |    for(i=1,i<n,i++){
      |                   ^
      |                   ;
Main.c:5:19: error: expected expression before ‘)’ token