C Program to Show the Duality Transformation of Line and Point

This is a C Program to show the duality transformation of line and point. The transformation corresponds from line to point and point to line.

Here is source code of the C Program to Show the Duality Transformation of Line and Point. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

```
#include <string.h>
```
```
#include <stdio.h>
```
```
#include <stdlib.h>
```
```
 
```

void performLineTransformation(double a, double b) {

    printf("X: %lf, Y: %lf", (b / a), (b * -1));

```
}
```
```
 
```

void performPointTransformation(double x, double y) {

    printf("y=%lfx + %lf", (-1 * y / x), (-1 * y));

```
}
```
```
 
```
```
int main(int argc, char **argv) {
```

    printf("Perform what transformation.\n1. Line Transformation\n2. Point Transformation");

```
 
```
```
    int option;
```
```
    scanf("%d", &option);
```
```
    switch (option) {
```
```
    case 1:
```

        printf("Enter the coefficients of line <y=ax-b>");

```
        double a, b;
```
```
        scanf("%lf", &a);
```
```
        scanf("%lf", &b);
```

        performLineTransformation(a, b);

```
        break;
```
```
    case 2:
```

        printf("Enter the coordinate of point <x, y>");

```
        double x, y;
```
```
        scanf("%lf", &x);
```
```
        scanf("%lf", &y);
```

        performPointTransformation(x, y);

```
        break;
```
```
    default:
```
```
        break;
```
```
    }
```
```
    return 0;
```
```
}
```

Output:

$ gcc DualityTransform.c
$ ./a.out
 
Perform what transformation.
1. Line Transformation
2. Point Transformation
1
Enter the coefficients of line <y=ax-b>: 1 2 3
X: 2.000000, Y: -2.000000

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