利用ASCII编码第三个字符，作为基础，然后利用三个多重循环画出一个爱心出来。要使用控制台改变运行框大小和文字的颜色，黑白的爱心不免有些诡异。
#define _CRT_SECURE_NO_WARNINGS#include <stdio.h>#include <math.h>#include <stdlib.h>#include <conio.h>#define I 20#define R 350int main(){system("mode con cols=80 lines=80");system("color F4");int i, j, e;int a;long time;for (i = 1, a = I; i < I / 2; i++, a--){for (j = (int)(I - sqrt(I*I - (a - i)*(a - i))); j > 0; j--)printf(" ");for (e = 1; e <= 2 * sqrt(I*I - (a - i)*(a - i)); e++)printf("\3");for (j = (int)(2 * (I - sqrt(I*I - (a - i)*(a - i)))); j > 0; j--)printf(" ");for (e = 1; e <= 2 * sqrt(I*I - (a - i)*(a - i)); e++)printf("\3");printf("\n");}for (i = 1; i < 49;i++){if (i == 20){printf(" 我喜欢你 ");i += 15;}printf("\3");}printf("\n");for (i = 1; i <= R / 2; i++){if (i % 2 || i % 3)continue;for (j = (int)(R - sqrt(R*R - i * i)); j > 0; j--)printf(" ");for (e = 1; e <= 2 * (sqrt(R*R - i * i) - (R - 2 * I)); e++)printf("\3");printf("\n");}system("pause");}
