If Statement in C programming with Examples

 

 

Hello friends how are you, today in this blog i will teach you what is if statement, syntax of if , how if statement works and many programs using if statement in a very simple way.

Let's start

👉Syntax

1.If the condition is true its body execute otherwise does not execute.

2.In the case of if in the place of condition always zero and non-zero value is checked in which zero means condition false and non-zero means condition true

Example 1 

#include<stdio.h>
int main()
{
//Assigning value to the variable
int x=50,y=20;
//checking the condition
if(x>y)
{
printf("x is greater than y");
}
}
### Output ###
x is greater than y

Example 2 

#include<stdio.h>
int main()
{
//Assigning value to the variable
int x=50,y=20;
//checking the condition
if(x<y)
{
printf("x is greater than y");
}
}
/*
### Output ###
condition is false so there is no output
*/

Example 3

#include<stdio.h>
int main()
{
if(8)
{
printf("Hello");
}
}
/*
### Output ###
Hello
*/

In case of at the place of condition always zero and non-zero value is checked in which zero means condition false otherwise true. Here in above example 8 is a non-zero value so condition will be true and output will be Hello

Example 4

#include<stdio.h>
int main()
{
if(0)
{
printf("Hello");
}
}
/*
### Output ###

*/

0 means condition false so there will be no output here.

Example 5

#include<stdio.h>
int main()
{
if(8,9,6,0,0,7,8)
{
printf("Hello");
}
}
/*
### Output ###
Hello
*/

In this situation always last value is checked and at last there is 8 so condition is true because 8 is non-zero value.

Program: Greatest Value three numbers

#include<stdio.h>
int main()
{
int no1,no2,no3;
printf("Enter number1:");
scanf("%d",&no1);
printf("Enter number2:");
scanf("%d",&no2);
printf("Enter number3:");
scanf("%d",&no3);
if(no1>no2&&no1>no3)
printf("%d is greaest value",no1);
if(no2>no1&&no2>no3)
printf("%d is greaest value",no2);
if(no3>no2&&no3>no1)
printf("%d is greaest value",no3);

}
/*
### Output ###
Enter number1:84
Enter number2:95
Enter number3:67
95 is greatest value
*/

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