本文共 1552 字，大约阅读时间需要 5 分钟。

进度条like this

//cpp#include 
   
    #include 
    
     #include 
     
      float f(float x, float y, float z) {    float a = x * x + 9.0f / 4.0f * y * y + z * z - 1;    return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z;}float h(float x, float z) {    for (float y = 1.0f; y >= 0.0f; y -= 0.001f)        if (f(x, y, z) <= 0.0f)            return y;    return 0.0f;}void Heart() {    for (float z = 1.5f; z > -1.5f; z -= 0.05f) {        for (float x = -1.5f; x < 1.5f; x += 0.025f) {            float v = f(x, 0.0f, z);            if (v <= 0.0f) {                float y0 = h(x, z);                float ny = 0.01f;                float nx = h(x + ny, z) - y0;                float nz = h(x, z + ny) - y0;                float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz);                float d = (nx + ny - nz) * nd * 0.5f + 0.5f;                putchar(".:-=+*#%@"[(int)(d * 5.0f)]);            }            else                putchar(' ');        }        putchar('\n');    }}int main(){    char arr[102];      char* sign = "|/-'\'";          //小菊花的零件    int i = 0;    arr[0] = 0;    for (i = 0; i <= 100; i++)    {        printf("[%-100s] [%d%%] %c\r", arr, i, sign[i%3]);        Sleep(70);                          fflush(stdout);             //刷新输出        arr[i] = '#';        arr[i + 1] = 0;    }    printf("\nheart.jpg\n");    Sleep(1000);    Heart();    system("pause");    return 0;}
     
    
   

注意的是打印’%’时需要输入两个’%’

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