57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
#include <M5StickCPlus.h>
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// -1 if error
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int a = 0;
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int b = 0;
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int targetResult = 0;
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enum class Operator{
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plus,
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minus,
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mult
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};
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void initRandomSeed(){
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M5.Imu.Init();
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float accX, accY, accZ;
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delay(250); // Wait for imu init
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M5.IMU.getAccelData(&accX, &accY, &accZ);
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float accelSum = accX + accY + accZ;
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unsigned long seed = accelSum * 1000000;
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randomSeed(seed);
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}
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String generateQuestion(){
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Operator oper = static_cast<Operator>(random(0, 3));
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switch (oper)
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{
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case Operator::plus:
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a = random(0, 15);
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b = random(1, 15);
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targetResult = a + b;
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return String(a) + "+" + String(b) + " = ?";
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case Operator::minus:
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do
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{
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a = random(15, 30);
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b = random(0, 15);
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targetResult = a - b;
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} while (targetResult <= 0);
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return String(a) + "-" + String(b) + "= ?";
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case Operator::mult:
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a = random(0, 10);
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b = random(1, 10);
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targetResult = a * b;
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return String(a) + "*" + String(b) + "= ?";
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default:
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Serial.println("Failed to create math question");
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return "Error";
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}
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} |