Float A, B, C; printf("A:")

1. #include

#include

int main(void)

{

float A, B, C;

printf("A:");

scanf ("%f", &A);

printf("B:");

scanf ("%f", &B);

printf("C:");

scanf ("%f", &C);

float AC = abs(A-C);

printf("AC:%f\n",AC);

float BC = abs(B-C);

printf("BC:%f\n",BC);

printf("AC+BC:%f\n",AC*BC);

return 0;

}

2. #include

int main(void)

{

int a1, a2, a3;

printf("1:");

scanf ("%i", &a1);

printf("2:");

scanf ("%i", &a2);

printf("3:");

scanf ("%i", &a3);

if (a2==a3) printf("%i\n",1);

else if (a1==a3) printf("%i\n",2);

else printf("%i\n",3);

return 0;

}

6. #include

float circles(float r){

return 3.14*r*r;

}

int main(void)

{

int i;

for(i=1; i<=3; ++i){

float r;

printf("R:");

scanf("%f", &r);

printf("S:%f\n",circles(r));

}

return 0;

}