Looping Statement And Flow Chart
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This document discusses looping statements and flow charts. It describes two types of looping statements: entry control loops like for and while that check the condition first before executing the code block, and exit control loops like do-while that execute the code block first before checking the condition. It provides examples of each loop type and explains the syntax. It also discusses flow charts, describing them as diagrams that show the order and relationship of operations to solve a problem, and lists some basic flow chart symbols.
Looping Statement And Flow Chart
- 1. Looping Statement & Flow Chart Guided by- All Teachers Presented by – Rahul Sahu B.Sc.- IIIrd Year (CS)
- 2. Looping Statement:- The Statement which is use to repeat the single or block of statement up to given condition is known as looping statement. Type of looping statement:- looping statement is divided in two parts- i. Entry control loop ii. Exit control loop
- 3. Entry Control Loop:- The looping statement which check the condition first and than execute block of statement is known as Entry control loop. It is known as Entry control loop because it check condition in Entry level of loop. If condition is true the body of loop is executed and if condition is false the body of loop is not executed. Ex:- for and while.
- 4. Exit Control Loop:- This looping statement is executed body of loop first (at least one time) and than condition is checked because the condition is checked at the time of exit this looping statement is known as Exit control loop. Ex:- do while .
- 5. While loop:- The simplest entry control loop which can first check condition than execute body of loop if condition is true. Syntax:- while(condition) { ----------------- body of loop; ----------------- increment / decrement operator of a counter variable; }
- 6. Example:- #include<stdio.h> void main() { int a,b,c; printf(“n Enter the no. to print table”); Output:- scanf(“%d”,&a); b=1; while(b<=10) { c=a*b; printf(“n %d x %d = %d”,a,b,c); b++; } getch(); }
- 7. For loop:- For is composite control loop in which all the looping part is written single line. Syntax:- for(initialization ; condition; increment) { ------------------- body of loop; ------------------- }
- 8. Example:- #include<stdio.h> void main() { int a,b,c; printf(“n Enter the no. to print table”); Output:- scanf(“%d”,&a); for(b=1;b<=10;b++) { c=a*b; printf(“n %d x %d = %d”,a,b,c); } getch(); }
- 9. Do While Loop:- do while is exit control loop in which body of loop executed first ( at least one time) by do statement and than condition is checked by while statement. If condition is true the process is repeated otherwise next part of program is executed. Syntax:- do { ----------------- Block of statement; ------------------ }while(condition);
- 10. goto statement:- It is a jumping statement use to jump the control of program from one part to another specific part. Syntax:- goto label; Types of goto statement:- 1. Forward jump (label declare to below of goto ) 2. Backward jump (label declare to above of goto)
- 11. Flow Chart:- A flow chart is essentially a diagram or picture which defines the procedure how to solve the problem. A flow chart show the order of operations. It also show the relationship between the sections of the program. Flow chart are independent of a particular computer or computer language.
- 12. Some Basic Symbol For Flow Chart:- Start / End In page break Input / Output Off page break Processing Decision Flow of Process
- 13. Example:- Print table False True Start Enter no. a b=1 Is b<=10 c= a * b Print a x b =c b++ Stop
- 14. Thank you