The document discusses different types of nested loops in programming. It explains nested while loops, do-while loops, and nested for loops. For nested while loops, the inner loop must start after the outer loop and end before the outer loop. An example prints a series using nested while loops. Do-while loops execute the loop statement once before checking the condition. An example uses do-while to check if a number is positive or negative. Nested for loops can contain another for loop in its body, as long as the inner loop variable has a different name. An example prints a series using nested for loops.

1. Presentationnested loopsBy:- Balwinder Singh

2. contentsWhat is a Loop?

3. Nested While loops.

4. Do…..While loops.

5. Nested For loops.

6. Question. What is a loop?A loop is a programming structure that contains an executable block of code that repeats so long as a given condition is true/not true.

7. Good programmers include a way to satisfy the condition somewhere inside the executable block.loops

8. Types of nested loopsNested While Loops.

9. Do…..While Loops.

10. Nested For Loops.nested loops

11. Nested while loopsWHILE loops may be nested, that is you can put a WHILE loop inside another WHILE loop.

12. However, one must start the inner loop after starting the outer loop and end the inner loop before ending the outer loop for a logically correct nesting. Example:- nested while loopsTo print the following series:-11 21 2 31 2 3 41 2 3 4 5

13. Example:- nested while loops#include<stdio.h>#include<conio.h>main(){ int r=1,c=1; while (r<=5) { c=1; while(c<=r) {printf(“%d”,c);c++; }printf(“\n”); r++; }getch();}

14. Do……while loopExecutes the loop statement once and then repeats the loop statement until the condition is zero (false).