// http://d...content-available-to-author-only...o.jp/qa/question_detail/q1078453585
// questioner: tobe_scorpionさん
// answer: shira3
 
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
 
#define Y_ORIGIN (10)
#define X_ORIGIN (5)
#define Y_WIDTH (10)
#define X_WIDTH (72)
#define Y_SIZE (Y_ORIGIN + Y_WIDTH + 1)
#define X_SIZE (X_ORIGIN + X_WIDTH + 1)
char graph[Y_SIZE][X_SIZE + 1]; /* +1 for '\0' */
 
void graph_init() {
    int y;
    memset(graph, ' ', sizeof(graph));
    for (y = 0; y < Y_SIZE; y++) {
        graph[y][X_ORIGIN] = '|';
        graph[y][X_SIZE  ] = '\0';
    }
    memset( &graph[Y_ORIGIN          ][X_ORIGIN + 1], '-', X_WIDTH);
    strncpy(&graph[Y_ORIGIN - Y_WIDTH][X_ORIGIN - 5], "+1.0 +", 6);
    strncpy(&graph[Y_ORIGIN          ][X_ORIGIN - 5], " 0.0 +", 6);
    strncpy(&graph[Y_ORIGIN + Y_WIDTH][X_ORIGIN - 5], "-1.0 +", 6);
    strncpy(&graph[Y_ORIGIN + 1      ][X_ORIGIN + 1              ], "0"  , 1);
    strncpy(&graph[Y_ORIGIN + 1      ][X_ORIGIN + X_WIDTH / 2 - 3], "180", 3);
    strncpy(&graph[Y_ORIGIN - 1      ][X_ORIGIN + X_WIDTH     - 3], "360", 3);
}
 
void graph_plot(double x, double y) {
    graph[Y_ORIGIN - lround(y * Y_WIDTH)][X_ORIGIN + lround(x * X_WIDTH / 360)] = '*';
}
 
void graph_print() {
    int y;
    for (y = 0; y < Y_SIZE; y++) {
        printf("%s\n", graph[y]);
    }
}
 
int main(int argc, char** argv) {
    double angle;
    graph_init();
    for (angle = 0; angle <= 360; angle += 360 / X_WIDTH) {
        graph_plot(angle, sin(2 * M_PI / 360 * angle));
    }
    graph_print();    
    return 0;
}

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