请教这个嵌套循环怎么样理解 高手能一步步分析出来吗?谢谢
void main(){
int i,a[10];
for(i=0;i<10;i++)
a[i++]=2*i+1;
for(i=9;i>=0;i--)
printf("%d",a[i]);
printf("\n%d %d\n",a[5.2],a[5.8]);
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