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- #include <stdio.h>
- #include <stdlib.h>
- #define PI 3.1415926535
- #define TAU 2*PI
- int main()
- {
- //int numvar;
- //numvar = 6; //když není deklarovaná tak C vypisuje random stuff z paměti, beware!
- //printf("%d", numvar);
- //printf("%d + %d = %d", 1,numvar,1+numvar);
- float r; //polomer
- puts("Zadejte polomer:"); //tupější printf s auto \n
- scanf("%f", &r); //& pointer... vetsinou by tu mel byt
- printf("obvod je %f\n", TAU*r); //%d = digit
- printf("obsah je %f\n", PI*r*r); //%f = float
- return 0;
- }
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