2个含有2位小数的浮点数x和y,计算出这两个浮点数和,差,商,积,又将得到的四个浮点数按四舍五入的规则转换为整数,希望写一个程序验证计算结果正确性
input共一行,包括两个浮点数x与y
output共一行,四个整数,中间用空格隔开,四个整数分别为x+y,x-y,x*y,x/y四舍五入后的结果
记得采纳哦
#include <stdio.h>
#include <math.h>
int main() {
float x, y;
printf("请输入两个含有2位小数的浮点数x和y:\n");
scanf("%f %f", &x, &y);
float sum = round(x + y);
float diff = round(x - y);
float prod = round(x * y);
float quot = round(x / y);
printf("和=%d,差=%d,积=%d,商=%d\n", sum, diff, prod, quot);
return 0;
}
#include <stdio.h>
#include <math.h>
int main()
{
float x, y;
printf("请输入两个浮点数(保留两位小数):");
scanf("%f %f", &x, &y);
float s = x + y;
float d = x - y;
float q = x / y;
float p = x * y;
printf("和:%.2f\n", s);
printf("差:%.2f\n", d);
printf("商:%.2f\n", q);
printf("积:%.2f\n", p);
int rs = round(s);
int rd = round(d);
int rq = round(q);
int rp = round(p);
printf("和:%d\n", rs);
printf("差:%d\n", rd);
printf("商:%d\n", rq);
printf("积:%d\n", rp);
return 0;
}
手动四舍五入
int t=(sum*100+0.5)/100 第2位小数四舍五入
用库函数 <tgmath.h>的 round
int t=round(sum)
【以下回答由 GPT 生成】
要在C语言中进行浮点数的加减乘除操作,并将结果四舍五入为整数,可以按照以下步骤进行:
x
和y
,分别表示输入的两个浮点数。c float x, y;
scanf
函数从用户输入中读取这两个浮点数的值。```c printf("请输入浮点数x:"); scanf("%f", &x);
printf("请输入浮点数y:"); scanf("%f", &y); ```
c float sum = x + y; float difference = x - y; float product = x * y; float quotient = x / y;
c int roundSum = (int)(sum + 0.5); // 四舍五入求和 int roundDifference = (int)(difference + 0.5); // 四舍五入求差 int roundProduct = (int)(product + 0.5); // 四舍五入求积 int roundQuotient = (int)(quotient + 0.5); // 四舍五入求商
c printf("四舍五入后的和:%d\n", roundSum); printf("四舍五入后的差:%d\n", roundDifference); printf("四舍五入后的积:%d\n", roundProduct); printf("四舍五入后的商:%d\n", roundQuotient);
完整代码如下:
#include <stdio.h>
int main() {
float x, y;
printf("请输入浮点数x:");
scanf("%f", &x);
printf("请输入浮点数y:");
scanf("%f", &y);
float sum = x + y;
float difference = x - y;
float product = x * y;
float quotient = x / y;
int roundSum = (int)(sum + 0.5);
int roundDifference = (int)(difference + 0.5);
int roundProduct = (int)(product + 0.5);
int roundQuotient = (int)(quotient + 0.5);
printf("四舍五入后的和:%d\n", roundSum);
printf("四舍五入后的差:%d\n", roundDifference);
printf("四舍五入后的积:%d\n", roundProduct);
printf("四舍五入后的商:%d\n", roundQuotient);
return 0;
}
运行以上代码,程序会依次提示输入两个浮点数,并输出四舍五入后的和、差、积和商。
注意:以上代码是基于C语言标准的,直接运行在大部分C编译器中是没有问题的。然而,某些特定的编译器或硬件平台可能对浮点数运算有所改动,导致四舍五入的结果不准确。所以在实际应用中,如果对精确度要求较高,可能需要使用特定的库函数或算法来进行浮点数的运算和四舍五入。
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