In this article we will talk about statements in C.
SIMPLE IF :- The ' statement block ' may be a single statements or a group of statements . If the test expression is true , the statement - block will be executed ; otherwise the statements - block will be skipped . The general form of using IF statement is :-
if(test expression) { Statement - block }
Example :-
#include <stdio.h> int main( ) { int num; printf("Enter a number "); scanf("%d",&num); if ( num <= 10 ){ printf(" num is valid "); } return 0; }
The IF - ELSE Statements :- The expression written in if block will execute when the expression is true , if the expression is false , then the set of statements in else block will execute.
Syntax :- if ( condition ) { statement } else { statements }
Example :-
#include <stdio.h> int main( ) { int num; printf("Enter a number "); scanf("%d",&num); if ( num <= 10 ){ printf(" num is valid "); } else { printf("num is invalid ");} return 0; }
Nested IF - ELSE Statements :- We can write an entire If- else statements within either the body of the if statement or the body of an Else - Statement.
Syntax :- if ( condition ) { statement } else { if ( condition ){ statements } else { statement } }
Example :-
#include <stdio.h> int main( ) { int num; printf("Enter a number "); scanf("%d",&num); if ( num <= 10 ){ printf(" num is valid "); } else if ( num >= 10 ){ printf(" num is in-valid "); else { printf("num is equal ");} } return 0; }
Conditions and it's meaning :-
a==b a is equal to b
a!=b a is not equal to b
a > b a is greater than b
a < b a is less than b
a >= b a is greater than equal to b
a <= b a is less than equal to b
in next arictle we will dicuss about SWITCH-CASE statements in C.