CONTROL CONSTRUCTS

Control ConstructsControl constructs are of two types

1.DECISION MAKING STATEMENTS

2.LOOPING STATEMENTS

Control constructs areDecision making statements1.If statement2.If else statement3.Nested if else statement4.Switch caseLooping statements5.For loop6.While loop7.Do while loop

If statement:

if (condition) statement; orif (condition) { compound statement; }

Example of if statement:int i; printf ("Type in an integer"); scanf ("%ld", &i); if (i == 0) { printf ("The number was zero"); } if (i > 0) { printf ("The number was positive"); } if (i < 0) { printf ("The number was negative"); }

If else statement:

if (condition) statement1; Else statement2; Orif (condition) { statements1 ;} Else { statements2 ;}

If - else

? else

if

Example of if-else statement:int i; scanf ("%d",i); if (i > 0) { printf ("That number was positive!"); } else { printf ("That number was negative or zero!"); }

Nested if else statement:

if ((cond.) && (cond.)) { statement;} ORif (cond.) { if (cond.) { statement; } }

Example of nested-if statement:if ((i > 2) && (i < 4)) { printf ("i is three"); } or:if (i > 2) { if (i < 4) { printf ("i is three"); } }

SWITCH & BREAK

switch (integer value) {

case 1: statement1; break;

/* optional line */ case 2: statement2;

break; /* optional line */ .... default: default

statement break; /* optional line */ }

Switch case statement: