Create 1363.c
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88839a9866
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14271b73d8
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#include <stdio.h>
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#include <math.h>
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/*This program does not use #define to solve the problem*/
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int main()
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{
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double a,b,c,p;
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scanf("%lf %lf %lf",&a,&b,&c);
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p=(a+b+c)/2;
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printf("%.3lf\n",sqrt(p*(p-a)*(p-b)*(p-c)));
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return 0;
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}
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