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If-Else in Decision Statements of Programming in C
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If-Else 
If-Else is one of decision making statement. IF block of statements executed when the if condition is true otherwise executes ELSE block of statements.
Syntax 
If (condition or expression)
{
   statements;
}
else
{
   statements;
}
Program
#include
void main(){
    //declaring a and b variables
    int num;
    //getting a and b values
    printf("Enter a number\n");
    scanf("%d",&num);
    //compare a and b
    if ((num % 2) == 0)
    printf("Even number");
    else
    printf("Odd number");
}
Output 
Enter a number
12

Even number
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