Submission #1793613

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Source Code Expand

#include <stdio.h>
#include <math.h>

char dir_symbol[16][4] = {
    "N",
    "NNE",
    "NE",
    "ENE",
    "E",
    "ESE",
    "SE",
    "SSE",
    "S",
    "SSW",
    "SW",
    "WSW",
    "W",
    "WNW",
    "NW",
    "NNW"
};

char *dir(int deg)
{
    // degはx100で判定
    if (1125 <= deg && deg < 3375) {
        return dir_symbol[1];
    } else if (3375 <= deg && deg < 5625) {
        return dir_symbol[2];
    } else if (5625 <= deg && deg < 7875) {
        return dir_symbol[3];
    } else if (7875 <= deg && deg < 10125) {
        return dir_symbol[4];
    } else if (10125 <= deg && deg < 12375) {
        return dir_symbol[5];
    } else if (12375 <= deg && deg < 14625) {
        return dir_symbol[6];
    } else if (14625 <= deg && deg < 16875) {
        return dir_symbol[7];
    } else if (16875 <= deg && deg < 19125) {
        return dir_symbol[8];
    } else if (19125 <= deg && deg < 21375) {
        return dir_symbol[9];
    } else if (21375 <= deg && deg < 23625) {
        return dir_symbol[10];
    } else if (23625 <= deg && deg < 25875) {
        return dir_symbol[11];
    } else if (25875 <= deg && deg < 28125) {
        return dir_symbol[12];
    } else if (28125 <= deg && deg < 30375) {
        return dir_symbol[13];
    } else if (30375 <= deg && deg < 32625) {
        return dir_symbol[14];
    } else if (32625 <= deg && deg < 34875) {
        return dir_symbol[15];
    } else {
        return dir_symbol[0];
    }
}

int power(double speed)
{
    // 小数点第二位で四捨五入(x10で判定)
    speed = round(speed*10);
    if (speed <= 2) {
        return 0;
    } else if (3 <= speed && speed <= 15) {
        return 1;
    } else if (16 <= speed && speed <= 33) {
        return 2;
    } else if (34 <= speed && speed <= 54) {
        return 3;
    } else if (55 <= speed && speed <= 79) {
        return 4;
    } else if (80 <= speed && speed <= 107) {
        return 5;
    } else if (108 <= speed && speed <= 138) {
        return 6;
    } else if (139 <= speed && speed <= 171) {
        return 7;
    } else if (172 <= speed && speed <= 207) {
        return 8;
    } else if (208 <= speed && speed <= 244) {
        return 9;
    } else if (245 <= speed && speed <= 284) {
        return 10;
    } else if (285 <= speed && speed <= 326) {
        return 11;
    } else {
        return 12;
    }
}

int main(int argc, char const *argv[])
{
    int deg, dis;
    scanf("%d %d", &deg, &dis);

    double speed = (double) dis / 60; // m/s
    int w = power(speed);
    char *d = w ? dir(deg*10) : "C";

    printf("%s %d\n", d, w);
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:97:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &deg, &dis);
     ^

Judge Result