C编程嵌套if-else语句它始终是合法的,这意味着可以使用一个if 或 else if 在另一个if 或 else if 语句中 。
嵌套if语句的语法如下:
if( boolean_expression 1)
{
/* Executes when the boolean expression 1 is true */
if(boolean_expression 2)
{
/* Executes when the boolean expression 2 is true */
}
}
可以嵌套 if...else 在类似的方式 if 语句方式。
#include <stdio.h>
int main ()
{
/* local variable definition */
int a = 100;
int b = 200;
/* check the boolean condition */
if( a == 100 )
{
/* if condition is true then check the following */
if( b == 200 )
{
/* if condition is true then print the following */
printf("Value of a is 100 and b is 200" );
}
}
printf("Exact value of a is : %d", a );
printf("Exact value of b is : %d", b );
return 0;
}
让我们编译和运行上面的程序,这将产生以下结果:
Value of a is 100 and b is 200 Exact value of a is : 100 Exact value of b is : 200