Main.c: In function 'main':
Main.c:4:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'scanf'
    4 |     scanf("%c",&a);
      |     ^~~~~
Main.c:4:17: error: 'a' undeclared (first use in this function)
    4 |     scanf("%c",&a);
      |                 ^
Main.c:4:17: note: each undeclared identifier is reported only once for each function it appears in
Main.c:8:22: error: expected ';' before '}' token
    8 |     printf("%c",a+32)}
      |                      ^
      |                      ;