如This is my book用程序换为book my is This
求教

#include<stdio.h>
#include<string.h>
int main()
{
    char des[300];
    char src[][10]={
                    "Hello",
                    "betty",
                    "haha"
                    };
    
    int j=0;
    scanf("%s",des);
    for (int i=0;i<strlen(des);i++)
    {if(des[i]!=' ')
            src[j][i]=des[i];
    else j++;}
for( int i=sizeof(src)/sizeof(src[0]);i>=0;i--)
    printf("%s",src[i]);
    getchar();
    return 0;
}
我这样写程序运行不起来?