In how many films has Clint Eastwood played the character Dirty Harry?

Explanation

Clint Eastwood is an icon in American film. He gained fame in westerns such as 'The Good, the Bad and the Ugly' and 'A Fistful of Dollars' and immortalised his role as Dirty Harry, which he took on four times, with the line 'Do you feel lucky, punk?´. Also successful as a director, Eastwood has been Oscar nominated for best feature film 4 times, winning the first in 1992 for 'Unforgiven'. 'The Bridges of Madison County', where he played opposite Meryl Streep, was another firm success.