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| if-else statement |
When the first statement is true it executes the first block of the condition but if the condition is false another block of code will execute. In the condition part, you can use relational and conditional operators. We are not allowed to keep semicolons after condition, if we use it will terminate if condition.
Syntax
If (condition)
{
True block statement(s);
}
else
{
False block statement(s);
}
Flowchart
Program
// if else statement.
#include <stdio.h>
#include <conio.h>
void main()
{
int a;
printf("enter a value of a: ");
scanf("%d", &a);
// True part
if (100 > a)
{
printf("first block is executing\n");
}
// False part
else
{
printf("second block is executing\n");
}
getch();
}
output
enter a value of a: 102
the second block is executing
QUESTION:- if else statement with not operator to check either a user can vote or not.
#include <stdio.h>
#include <conio.h>
void main()
{
int a;
printf("Enter your age: ");
scanf("%d", &a);
if (!(a < 18)) // use of
{
printf("you can vote!\n");
}
else
{
printf("you can't vote!\n");
}
getch();
}
output
Enter your age: 14
you can't vote!
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