C語言-02選擇結構問題習題

C語言-02選擇結構問題習題答案：輸入a、b值，如果ab，那么交換a和b，使得ab#includevoid main() int a,b,t; scanf(%d%d,&a,&b); if(ab) t=a; a=b; b=t; printf(a=%d,b=%dn,a,b);輸入變量a、b和c，將它們按照從小到大的順序排序后輸出#includevoid main() int a,b,c,t; scanf(%d%d%d,&a,&b,&c); if(ab) t=a; a=b; b=t; if(ac) t=a; a=c; c=t; if(bc) t=b; b=c; c=t; printf(a=%d,b=%d,c=%dn,a,b,c);輸入a、b值，輸出其中較大的數#includevoid main() int a,b,t; scanf(%d%d,&a,&b); if(ab) printf(max=%dn,a); else printf(max=%dn,b);輸入x，求函數 的值#includevoid main() int x,y; scanf(%d,&x); if(x=1 & x=10) y=x*x+2*x+2; printf(y=%dn,y);輸入學生課程成績mark，按照方法 給出評分等級#includevoid main() int mark; char grade; scanf(%d,&mark); if(mark=90) grade=A; if(mark=80 & mark=70 & mark=60 & mark70) grade=D; if(mark60) grade=E; printf(grade=%cn,grade);給定整數，判定該數能否同時被6、9和14整除#includevoid main() int a; scanf(%d,&a); if(a%6=9 & a%9=0 & a%14=0) printf(yesn); else printf(non);輸入一個年號，判斷該年號是否閏年。#includevoid main()f int year; scanf(%d,&year); if(year%4=0 & year%100!=0) | (year%400=0) printf(yesn); else printf(non);水仙花數是指一個三位整數，該數三個數位的立方和等于該數本身,輸入一個3位整數，判斷該數是否水仙花數#includevoid main() int m,a,b,c; scanf(%d,&m); a=m/100;/Pb=(m%100)/10; c=m%10; if(a*a*a+b*b*b+c*c*c=m) printf(yesn); else printf(non);14某服裝店經營套裝，也單件出售，針對單筆交易的促銷政策為：（1）不少于50套，每套80元；（2）不足50套，每套90元；（3）只買上衣每件60元；（4）只買褲子每條45元；編寫計算器，分別輸入一筆交易中上衣和褲子數，計算應收款。#includevoid main() int up,down,all,suit; scanf(%d%d,&up,&down); if(up=0)/*只買褲子*/ all=down*45; if(down=0)/*只買上衣*/ all=up*60; if(updown) if(down=50) all=down*80+(up-down)*60; else all=down*90+(up-down)*60; else if(up