int A,B,C,largest,side1,side2;
    printf("enter the 3-dimensions\n");
    scanf("%d%d%d",&A,&B,&C);
    largest==A;
    side1==B;
    side2==C;
    if (B>largest){
    largest==B;
    side1==A;
    side2==C;
    }
    if (C>largest){
    largest==C;
    side1==A;
    side2==B;
    }
    if (largest*largest==side1*side1+side2*side2){
    printf("they could be the sides of right triangle");
    }