C语言 if嵌套
在C编程中,嵌套if-else语句始终是合法的,这意味着您可以在另一个if或else if语句中使用一个if或else if语句。
嵌套 if - 语法
嵌套if语句的语法如下所示:
if( boolean_expression 1) {
/* Executes when the boolean expression 1 is true */
if(boolean_expression 2) {
/* Executes when the boolean expression 2 is true */
}
}
您可以使用与嵌套if语句类似的方式嵌套else if.else。
嵌套 if - 示例
#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\n" );
}
}
printf("Exact value of a is : %d\n", a );
printf("Exact value of b is : %d\n", b );
return 0;
}
编译并执行上述代码后,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