3. A tor loop is useful when you know in advance the number of iterations to be executed. The tor loop consists of three parts each of which is separated by a semicolon (:). The first part is initialization of the variable for iteration, the second part is a test of the iteration variable and if this test fails, the loop is finished. The third part is a counter for the iteration variable. A block can be followed after the for statement (no semicolon multiple statemernts for each iteration for initial value; condition counter to execute nti statemznt: The following program prints an integer value from 15 to 20. inciude