1. Intro to Programming Week # 6 Repetition Structure Lecture # 10
Department of Computer Science & Engineering
Air University
Intro to Programming Week # 6 Repetition Structure Lecture # 10
By: Saqib Rasheed

2. .
Nested loops

3. Nested Loops A loop can be nested inside of another loop.
C++ allows at least 256 levels of nesting
When working with nested loops, the outer loop changes only after the inner loop is completely finished

4. The syntax for a nested for loop statement in C++
for ( init; condition; increment ) { statement(s); } statement(s); // you can put more statements.

5. The syntax for a nested while loop statement in C++
while(condition) { statement(s); } statement(s); // you can put more statements.

6. The syntax for a nested do...while loop statement in C++
do { statement(s); // you can put more statements. statement(s); } while( condition );

7. For loop nesting

8. Nested loops (loop in loop)b
*************
cin >> a >> b;
for (int i = 0; i < a; i++) {
for (int j=0; j<b; j++)
cout << “*”; }
cout << endl; a

9. Nested loops (2) b * ** *** a **** int a,b; cin >> a >> b;
for (int i = 0; i < a; i++) {
for (int j=0; j<b; j++)
if (j > i)
break;
cout << “*”; }
cout << endl;

10. Nested loops (3) b * ** *** a **** int a,b; cin >> a >> b;
for (int i = 0; i < a; i++)
{ for (int j=0; j<b && j < i; j++) {
cout << “*”; }
cout << endl;
if (j > i) break;
j <= i;

11. Nested loops (4) b ************* ************ *********** a **********
int a,b;
cin >> a >> b;
for (int i = 0; i < a; i++) {
for (int j=0; j<b; j++)
if (j < i)
cout << “ ”;
else
cout << “*”; }
cout << endl;

12. Write a program in C++ that prints a tables Starting from 1 12.
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13. #include <iomanip> // defines setw()
#include <iostream> // defines cout
using namespace std;
int main() {
for (int x=1; x <= 12; x++)
for (int y=1; y <= 12; y++)
cout << setw(4) << x*y;
cout << endl;
} return 0; } .
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14. Assignment Due next Class Copied Assignments will be marked zero
Late Assignment not accepted
Hard Copies only
Write your name roll #, Section

15. Nested loops (5) *
***
*****
*******
*********
***********

16. Develop a code in C++ that generate the following series
Develop a code in C++ that generate the following series .Use nested while loop! .
Series
No No No. 3 1
2 2
3 3 3 1
2 3
4 5 6 1
1 2
1 2 3
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