求8为什么过不了啊

#include<stdio.h>
#include<math.h>
int main() {
    int T;
    scanf("%d",&T);
    if (T == 1) {
       printf("I love Luogu!\n");
    } else if (T == 2) {
     int a,b,c;
     a=10,b=2,c=4;
     printf("%d %d\n",b+c,a-b-c);
    } else if (T == 3) {
        int d,e;
         d=14; e=4;
    printf("%d\n",d/e);
    printf("%d\n",d/e*e);
    printf("%d",d-d/e*e);
    } else if (T == 4) {
        int a3,b3;
        a3=500;
        b3=3;
        double c3;
        c3=1.0*a3/b3;
    printf("%0.3f\n",c3);
    } else if (T == 5) {
        int a1,b1,c1,d1;
        a1=260,b1=12,c1=220,d1=20;
        printf("%d\n",(a1+c1)/(b1+d1));
    } else if (T == 6) {
        int a2,b2;
        a2=6,b2=9;
        printf("%0.4f\n",sqrt(1.0*a2*a2+1.0*b2*b2));
    } else if (T == 7) {
        int x;
        x=100;
        printf("%d\n",x+10);
        printf("%d\n",x+10-20);
        printf("%d\n",0);
    } else if (T == 8) {
        int r;
        double C,S,V;
        r=5;
        C=2*3.141593*r;
        S=3.141593*r*r;
        V=4.0/3.0*3.141593*r*r*r;
        printf("%f\n",C);
        printf("%f\n",S);
        printf("%f\n",V);
    } else if (T == 9) {
        printf("%d\n",(((1+1)*2+1)*2+1)*2);
    } else if (T == 10) {
        double x1;
       x1=1.0*(30*8-10*6)/(30-6);
       double y1;
       y1=10*6-6*x1;
       double z;
       z=(y1+x1*10)/10;
       printf("%.f",z);
    } else if (T == 11) {
        printf("%0.4f",1.0*100/(8-5));
    } else if (T == 12) {
       printf("%d\n",'M'-'A'+1);
       printf("%c",'A'+18-1);
    } else if (T == 13) {
        double V1,L;
        V1=1.0*4/3*4*4*4*3.141593+1.0*4/3*10*10*10*3.141593;
        L=pow(V1,1.0*1/3);
        printf("%.f",L);
    } else if (T == 14) {
        printf("%d",50);
        }
    return 0;
}