#include <stdio.h>

int quadrato(float x) {
    float q;
    q = x*x;
    return q;
}

int main(void) { //oppure void main()
    float x,q;
    for(x=0.0;x<=10.0;x=x+0.5) {
        q=quadrato(x);
            printf("%3.2f --> %3.2f\n",x,q);
    }
}