20岁生日快乐c语言,用c语言怎么写生日快乐？？

满意答案

teeqc

2016.03.22

采纳率：58%    等级：10

已帮助：1721人

#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;}

int main() {

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');

}

}

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