Question

Determine the execution count of the following programs: (number of loops executed?)

int i = 10;

while(i > 0)

{

for(int p = 5; p < 14; p++)

b{

System.out.println(i + p)

p++;

}

i--;

}

Answer 1

• Outer loop(while loop) executes 10 times(When i is 10,9,8,7.......3,2,1)
• inner loop(for loop) executes 5 times for each i value
  • Here p is increment twice in each iteration
  • One is in the for loop itself and other is in the loop body
  • First p is 5 which is less than 14, loop body executes
  • Then p increment to 7 which is less than 14, loop body executes
  • Then p increment to 9 which is less than 14, loop body executes and so on
  • Execution of loop body continue as long as p<14
  • So loop executes when p is 5,7,9,11,13.Total 5 times.
• So execution count of the program is 10x5=50

Screen shot of code and output for more clarity