#include?<stdio.h>
#include?<stdlib.h>
union?Date
{
?int?i;
?char?ch;
?float?f;
}a;
int?main(int?argc,?char?*argv[])?{
?a.i?=?97;
?printf("%f\n",a.f);?
?int?b=97;
?printf("%f\n",(float)b);
?return?0;
}
1 回答
慕用4063026
TA貢獻(xiàn)195條經(jīng)驗(yàn) 獲得超115個(gè)贊
int?main(int?argc,?char?*argv[])?{
?a.i?=?97;
?printf("%f\n",a.f);?//a.f沒賦值當(dāng)然.f之后是0.000000
?int?b=97;
?printf("%f\n",(float)b);//(float)b，b賦值97之后.f當(dāng)然是97.000000
?return?0;
}
沒懂你要知道什么
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