Condition

#include <stdio.h>

main(){
    int a,b,c;

    do{
    printf("\n Donner la valeur de A :"); scanf("%d",&a);
    printf("\n Donner la valeur de B : "); scanf("%d",&b);
    }while(a==b);

    c = a * b;

    if(c>=10 && c<=250)
        printf("\n Resultat erreur");
    else if(c>0)
        printf("\n Superieur");
    else if(c<0)
        printf("\n Inferieur");
    else
        printf("\n Null");

    return 0;
}

@ussefshahid