Ada (GNAT), 203 bytes

procedure GNAT.IO.F is begin for I in Integer range 1..100 loop Put((if I mod 3=0 then"Fizz"else"")&(if I mod 5=0 then"Buzz"else""));if I mod 3/=0 and I mod 5/=0 then Put(I);end if;New_Line;end loop;end;

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189 bytes if extraneous whitespace is allowed:

procedure GNAT.IO.F is begin for I in Integer range 1..100 loop Put(if I mod 3=0 then(if I mod 5=0 then"FizzBuzz"else"Fizz")else(if I mod 5=0 then"Buzz"else I'Image));New_Line;end loop;end;

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Ada (GNAT), 196 bytes

procedure GNAT.IO.F is begin for I in Integer range 1..100 loop Put((if I mod 3=0 then"Fizz"else"")&(if I mod 5=0 then"Buzz"else""));if I mod 3*I mod 5/=0 then Put(I);end if;New_Line;end loop;end;

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189 bytes if extraneous whitespace is allowed:

procedure GNAT.IO.F is begin for I in Integer range 1..100 loop Put(if I mod 3=0 then(if I mod 5=0 then"FizzBuzz"else"Fizz")else(if I mod 5=0 then"Buzz"else I'Image));New_Line;end loop;end;

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Ada (GNAT), 203 bytes

procedure GNAT.IO.F is begin for I in Integer range 1..100 loop Put((if I mod 3=0 then"Fizz"else"")&(if I mod 5=0 then"Buzz"else""));if I mod 3/=0 and I mod 5/=0 then Put(I);end if;New_Line;end loop;end;

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Ada (GNAT), 203 bytes

procedure GNAT.IO.F is begin for I in Integer range 1..100 loop Put((if I mod 3=0 then"Fizz"else"")&(if I mod 5=0 then"Buzz"else""));if I mod 3/=0 and I mod 5/=0 then Put(I);end if;New_Line;end loop;end;

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189 bytes if extraneous whitespace is allowed:

procedure GNAT.IO.F is begin for I in Integer range 1..100 loop Put(if I mod 3=0 then(if I mod 5=0 then"FizzBuzz"else"Fizz")else(if I mod 5=0 then"Buzz"else I'Image));New_Line;end loop;end;

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