二十五岁时我们都一样愚蠢、多愁善感，喜欢故弄玄虚，可如果不那样的话，五十岁时也就不会如此明智。
标题：if...else 语句
if...else 语句
#include <stdio.h> int main () { /* local variable definition */ int a = 100; /* check the boolean condition */ if( a < 20 ) { /* if condition is true then print the following */ printf("a is less than 20\n" ); } else { /* if condition is false then print the following */ printf("a is not less than 20\n" ); } printf("value of a is : %d\n", a); return 0; }
