问一个C语言问题:输入两个浮点数,输出较大的一个?这个怎么写程序啊? c语言中写程序 输入三个浮点数,找出其中最大的值
C\u8bed\u8a00\u95ee\u9898\uff1a\u6bd4\u8f83\u4e24\u4e2a\u6d6e\u70b9\u6570\u5927\u5c0f1\u3001\u6d6e\u70b9\u7c7b\u578b\u4e0d\u80fd\u6bd4\u8f83\u76f8\u7b49\u6216\u4e0d\u7b49\uff0c\u4f46\u53ef\u4ee5\u6bd4\u8f83>,=,<=\u3002
2\u3001\u7528==\u4ece\u8bed\u6cd5\u4e0a\u8bf4\u6ca1\u9519\uff0c\u4f46\u662f\u672c\u6765\u5e94\u8be5\u76f8\u7b49\u7684\u4e24\u4e2a\u6d6e\u70b9\u6570\u7531\u4e8e\u8ba1\u7b97\u673a\u5185\u90e8\u8868\u793a\u7684\u539f\u56e0\u53ef\u80fd\u7565\u6709\u5fae\u5c0f\u7684\u8bef\u5dee\uff0c\u8fd9\u65f6\u7528==\u5c31\u4f1a\u8ba4\u4e3a\u5b83\u4eec\u4e0d\u7b49\u3002\u5e94\u8be5\u4f7f\u7528\u4e24\u4e2a\u6d6e\u70b9\u6570\u4e4b\u95f4\u7684\u5dee\u5f02\u7684\u7edd\u5bf9\u503c\u5c0f\u4e8e\u67d0\u4e2a\u53ef\u4ee5\u63a5\u53d7\u7684\u503c\u6765\u5224\u65ad\u5224\u65ad\u5b83\u4eec\u662f\u5426\u76f8\u7b49\u3002
\u4e00\u3001\u4e0d\u53ef\u5c06\u6d6e\u70b9\u53d8\u91cf\u7528\u201c==\u201d\u6216\u201c\uff01=\u201d\u4e0e\u4efb\u4f55\u6570\u5b57\u6bd4\u8f83\u3002\u8981\u7559\u610f\uff0c\u65e0\u8bba\u662ffloat \u8fd8\u662fdouble \u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u90fd\u6709\u7cbe\u5ea6\u9650\u5236\u3002\u6240\u4ee5\u4e00\u5b9a\u8981\u907f\u514d\u5c06\u6d6e\u70b9\u53d8\u91cf\u7528\u201c==\u201d\u6216\u201c\uff01=\u201d\u4e0e\u6570\u5b57\u6bd4\u8f83\uff0c\u5e94\u8be5\u8bbe\u6cd5\u8f6c\u5316\u6210\u201c>=\u201d\u6216\u201c<=\u201d\u5f62\u5f0f\u3002
\u4e8c\u3001\u5047\u8bbe\u6d6e\u70b9\u53d8\u91cf\u7684\u540d\u5b57\u4e3ax\uff0c\u5e94\u5f53\u5c06
if (x == 0.0) // \u9690\u542b\u9519\u8bef\u7684\u6bd4\u8f83
\u8f6c\u5316\u4e3a
if ((x>=-EPSINON) && (x<=EPSINON))
\u5176\u4e2dEPSINON \u662f\u5141\u8bb8\u7684\u8bef\u5dee\uff08\u5373\u7cbe\u5ea6\uff09\u3002
#include
main()
{
float a,b,c,r;
printf("\n\u8bf7\u8f93\u5165\u7b2c\u4e00\u4e2a\u6570:");
scanf("%f".&a);
printf("\n\u8bf7\u8f93\u5165\u7b2c\u4e8c\u4e2a\u6570:");
scanf("%f".&b);
printf("\n\u8bf7\u8f93\u5165\u7b2c\u4e09\u4e2a\u6570:");
scanf("%f".&c);
r=a;
if (b>r) r=b;
if (c>r) r=c;
printf("\n%f",r);
}
main()
{
float a,b;
printf("\n输入第一个数:");
scanf("%f".&a);
printf("\n输入第二个数:");
scanf("%f".&a);
if (a>b)
printf("\n%f",a);
else
printf("\n%f"b);
}/*没有包括 它们相等的情况*/
#include "stdio.h"
main( )
{
int t;
float a,b;
printf("a=");
scanf("%f",&a);
printf("\nb=");
scanf("%f",&b);
if(a>b)
printf("Max=%f\n",a);
else if(b>a)
printf("Max=%f\n",b);
}
浮点数不能直接与零值比较
应该设定一个精度范围
假设定义 |a - b| <= PRICISION
为a == b; // 即在精度范围PRICISION内
float a, b;
cin >> a >> b;
const PRICISION = 0.000001; // 精度
if(a - b > PRICISION)
cout << a;
else if(a - b < -PRICISION )
cout << b;
else
cout << "a == b";
弄个简单的~~~、
#include<stdio.h>
void main()
{
float n,m;
printf("请输入要比较的两数:\n");
scanf("%f %f",&n,&m);
printf("%f\n",n>m?n:m);
}
#include<stdio.h>
void main()
{
float n,mmax;
printf("请输入要比较的数:\n");
scanf("%f%f",&n,&m);
max(m>n)? n:m;
printf("最大的数为：%f\n",max)
}
绛旓細include <stdio.h> main(){ float a,b;printf("\n杈撳叆绗竴涓暟:");scanf("%f".&a);printf("\n杈撳叆绗簩涓暟:");scanf("%f".&a);if (a>b)printf("\n%f",a);else printf("\n%f"b);}/*娌℃湁鍖呮嫭 瀹冧滑鐩哥瓑鐨勬儏鍐*/
绛旓細浠ヤ笅鏄竴涓畝鍗曠殑C璇█绋嬪簭锛岀敤浜杈撳叆涓や釜娴偣鏁帮紝骞惰緭鍑哄畠浠殑鏈灏忓硷細杩欎釜绋嬪簭棣栧厛澹版槑浜嗕笁涓诞鐐规暟鍙橀噺锛歯um1銆乶um2鍜宮in銆傜劧鍚庯紝绋嬪簭浼氭彁绀虹敤鎴疯緭鍏ヤ袱涓诞鐐规暟锛屽苟浣跨敤scanf鍑芥暟璇诲彇杩欎袱涓暟銆傛帴鐫锛岀▼搴忎細姣旇緝杩欎袱涓暟锛屽苟灏嗚緝灏忕殑鍊艰祴缁檓in鍙橀噺銆♡♡ 鏈夊府鍔╁埌鐨勮瘽锛岄夯鐑﹂噰绾冲摝锛
绛旓細鍦C璇█缂栫▼涓紝瑕佸疄鐜颁粠閿洏杈撳叆涓や釜娴偣鏁帮紝鐒跺悗璁＄畻瀹冧滑鐨勫拰骞朵繚鐣欎袱浣嶅皬鏁扮殑杈撳嚭锛屼綘鍙互浣跨敤涓嬮潰鐨勪唬鐮佺墖娈碉細c include int main(){ float a, b;// 浠庨敭鐩樿緭鍏ユ诞鐐规暟 printf("璇疯緭鍏ヤ袱涓诞鐐规暟锛");scanf("%f %f", &a, &b);// 璁＄畻骞朵繚鐣欎袱浣嶅皬鏁拌緭鍑哄拰 printf("鍜屼负锛%.2f", a ...
绛旓細浠ｇ爜濡備笅锛歩nclude<stdio.h> int main(){ float a,b;printf("璇杈撳叆涓や釜娴偣鏁帮細");scanf("%f%f",&a,&b);printf("鍜屼负锛%.2f",a+b);return 0;} 鎵╁睍鍐呭锛歱rintf鍑芥暟涓殑format锛欶ormat 鍙傛暟鏄寘鍚笁绉嶅璞＄被鍨嬬殑涓涓瓧绗︿覆锛氭棤鏍煎紡瀛楃澶嶅埗鍒拌緭鍑烘祦锛涜浆鎹㈣鑼冿紝姣忎釜瑙勮寖瀵艰嚧鍦ㄥ煎弬鏁板垪琛...
绛旓細include<stdio.h> main(){ double a,b;printf(鈥杈撳叆涓や釜娴偣鍨嬫暟瀛楋細鈥);scanf("%f %f",&a,&b);printf("%f %f",b,a);}
绛旓細int main(){ float a,b;printf("璇杈撳叆涓や釜娴偣鏁癮 b锛");scanf("%f %f",&a,&b);if(0==b)printf("ERROR\n");else printf("%.2f\n",a/b);return 0;}
绛旓細绗竴棰橈細include <stdio.h> float he(float a,float b);float cha(float a,float b);void main(){ float x,y,s,c;printf("璇杈撳叆涓や釜娴偣鏁: ");scanf("%f%f",&x,&y);s=he(x,y);c=cha(x,y);printf("涓や釜娴偣鏁扮殑鍜屽兼槸%.2f\n",s);printf("涓や釜娴偣鏁扮殑宸兼槸%.2f\...
绛旓細include <stdio.h> int main(void){ float n, n2, n3;printf("璇杈撳叆涓涓鏁癨n");scanf("%f",&n);printf("璇峰啀杈撳叆涓涓暟\n");scanf("%f",&n2);n3=n2+n;printf("杩涓や釜鏁扮殑鍜屾槸%.2f",n3);return 0;}
绛旓細鐢辩▼搴忕殑瑕佹眰鎴戜滑鍙互寰楀埌锛屾垜浠彧闇瑕佸皢涓や釜鏁拌繘琛屼氦鎹紝鐒跺悗鍐嶈繘琛屾寚瀹氭牸寮忕殑杈撳嚭锛岃繖鏍锋垜浠氨鑳藉婊¤冻绋嬪簭鐨勯渶姹傘傜▼搴忎唬鐮侊細include <stdio.h> int main() { float a=0.0,b=0.0;scanf("%f%f",&a,&b);float temp=0.0;temp=a;a=b;b=temp;printf("%.2f %.2f\n", a,b);return ...
绛旓細{ float a,b;printf("enter two number:\n"); //杈撳叆涓や釜鏁 scanf("%f %f",&a,&b); //鎶婅緭鍏ヤ袱涓暟鍒嗗埆璧嬬粰a b if(a>b) printf("%.0f",a); //鍒ゆ柇璋佸ぇ灏辫緭鍑鸿皝 else printf("%.0f",b); //.0鏄兂瑕佸皬鏁扮偣鍚庝笉杈撳嚭 } ...
