Test Page Design

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Test Displaying drop-down with source

Figure 73 Frequency 0.2

Source, arguments.c

gcc -Wall -o arguments arguments.c
./arguments -f 0.2

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <getopt.h>
int main(int argc, char*argv[])
{
    float fc = 0.1f;

    int dopt;
    while ((dopt = getopt(argc,argv,"hf:")) != EOF) {
        switch (dopt) {
        case 'h': printf("[-h] [-f <frequency>]"); return 0;
        case 'f': fc = atof(optarg); break;
        default:
            exit(1);
        }
    }

    printf("t  cos  sin\n");
    float t;
    for (t=0; t<65; t+=1.0)
        printf("%12.8f %12.8f %12.8f\n", t, cosf(fc*t), sinf(fc*t));
    return 0;
}

Test Grid System for Responsive Design

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