C has the following conditional statements: Use if to specify a block of code to be executed, if a specified condition is true. Use else to specify a block of code to be executed, if the same condition is false. Use else if to specify a new condition to test, if the first condition is false.
If else is a Keyword used to implement conditional construct. Construct means a block.
Syntax:
if(condition)
{
// control comes here when the condition is true
}
else
{
// control comes here when the condition is false
}
- Accept a number, output will be less than 50 or greater than 50.
#include<stdio.h>
int main()
{
int x;
Printf(“Enter a number:”);
Scanf(“%d”,&x);
if(x<50)
{
Printf(“Less than 50”);
}
else
{
if(x>50)
{
Printf(“Greater than 50”);
}
else
{
Printf(“Equal to 50”);
}
}
return 0;
}
The above program depicts the if-else ladder concept.
There is another way to write the same program by using only if.
#include<stdio.h>
int main()
{
int x;
Printf(“Enter a number:”);
Scanf(“%d”,&x);
if(x<50)
{
Printf(“Less than 50”);
}
if(x>50)
{
Printf(“Greater than 50”);
}
if(x==50)
{
Printf(“Equal to 50”);
}
return 0;
}
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