c语言学习1.1变量

//变量

#include <stdio.h>int main(){int a;int b;    printf("请输入两个整数：");scanf("%d %d", &a, &b);printf("%d + %d = %d\n", a, b, a + b);    return 0;}

//常量

#include <stdio.h>int main(){const int AMOUNT = 100;int price = 0;    printf("请输入金额（元）：");scanf("%d", &price);    int change = AMOUNT - price;    printf("找您%d元。\n", change);    return 0;}

//浮点数

#include <stdio.h>int main(){printf("请分别输入身高的英尺和英寸，""如输入\"5 7\"表示5英尺7英寸：");    double foot;    double inch;    scanf("%lf %lf", &foot, &inch);    printf("身高是%f米。\n", ((foot + inch / 12) * 0.3048));return 0;}