#include <stdio.h>
#include <cmath>

int main(){
float a, b, c, D;
int r=0;

for(;r==0;){

printf("\\nyour input: ");
scanf("%f%f%f", &a, &b, &c);
D=b*b-4*a*c;

if(a==0){
    printf("Meanigless equation\\n");}
else{
    if(D==0){
        printf("The answar is: x1=%f (double root)\\n", -b/(2*a));}
    else if(D>0){
        printf("The answar is: x1=%f and x2=%f (two real root)\\n", -b/(2*a)+sqrt(D)/(2*a), -b/(2*a)-sqrt(D)/(2*a) );}    
    else{
        printf("The answar is: x1=%f+%fi and x2=%f-%fi (two complex root)\\n", -b/(2*a), sqrt(-D)/(2*a), -b/(2*a), sqrt(-D)/(2*a));}
}

printf("Do you like to solve another equation?(0:continue, 1:quit)\\n");
scanf("&d", &r);
printf(">>>");

if(r==0){
    printf("Give me three coefficients for quadratic equation>>");}
else break;
}
return 0;
}


이차방정식 구하는건데..
여기서 저는


printf("Do you like to solve another equation?(0:continue, 1:quit)\\n");
scanf("&d", &r);
printf(">>>");

if(r==0){
    printf("Give me three coefficients for quadratic equation>>");}
else break;
}
return 0;
이부분에서  scanf("&d", &r); 이게 씹히고 넘어가는 이유를 모르겠어요...ㅜㅜ...
아마 포문을 잘못 탄거 같은데....ㅜㅜ
형들 그냥 무한 루프타버리는데 어떻게 해야함?