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- #include <stdio.h>
- #include <stdlib.h>
- #include <math.h>
- int main()
- {
- float a,b,c,s,area;
- printf("Entre com os tres lados da figura : \n"); scanf("%f %f %f",&a,&b,&c);
- if ((a<(b+c))&&(b<(a+c))&&(c<a+b)&&(a>(abs(b-c)))&&(b>(abs(a-c)))&&(c>(abs(a-b))))
- {
- s = (a+b+c)/2;
- area = sqrt(s*(s-a)*(s-b)*(s-c));
- printf("Eh triangulo de area %f.\n",area);
- }
- else printf("Nao forma um triangulo!\n");
- return 0;
- }
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