27 lines
564 B
C
27 lines
564 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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float LineLength(float x1, float x2, float y1, float y2);
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int main()
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{
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float p1x = 3.4, p2x = 5.7, p1y = 0.0, p2y = 6.8;
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float length = 0;
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length = LineLength(p1x, p2x, p1y, p2y);
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printf("Length = %f", length);
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return 0;
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}
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float LineLength(float x1, float x2, float y1, float y2)
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{
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float result;
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float dx = x2-x1;
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float dy = y2-y1;
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float tol = 1e-10;
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if (fabs(dx) < tol && fabs(dy) < tol )
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return -1;
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result = sqrt(dx*dx + dy*dy);
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return result;
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}
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