# Define function to calculate the volumn : Function « Function « C / ANSI-C

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Define function to calculate the volumn
 ```    #include  double volume(double s1, double s2, double s3); int main(void) {   double vol;   vol = volume(12.2, 5.67, 9.03);   printf("Volume: %f", vol);   return 0; } double volume(double s1, double s2, double s3) {   return s1 * s2 * s3; }                    ```
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