c语言学习头大,学长们，你们的C语言咋过的？今天上机，看的头大

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#include

#include

#define LIMIT 1e-1

int main()

{

float a,b,c;

printf("");

scanf("%f,%f,%f",a,b,c);

if ((a+b)>c && (b+c)>a && (a+c)>b)

{

if ( fabs(a-b)<=LIMIT || fabs(b-c)<=LIMIT || fabs(c-a)<=LIMIT )

{

if (fabs(a*a+b*b-c*c) <= LIMIT || fabs(a*a+c*c-b*b) <= LIMIT || fabs(c*c+b*b-a*a) <= LIMIT )

{

printf("Iscsceles right triangle!");

}

else

{

printf("Iscsceles triangle!");

}

}

else if (fabs(a*a+b*b-c*c)<= LIMIT || fabs(a*a+c*c-b*b) <= LIMIT || fabs(c*c+b*b-a*a) <= LIMIT)

{

printf("Right angled triangle");

}

else

{

printf("Triangle!");

}

}

else

{

printf("Error!");

}

return 0;

}