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7ÌâÄ¿£º´Ó¼üÅÌÊäÈëÈý¸öÕûÊýa¡¢b¡¢c£¬Êä³öÆäÖÐ×î´óµÄÊý¡£ #include ¡°stdio.h¡± main()

{int a,b,c,max;

scanf(\if(a>b)

{if(a>c)max =a; } else

{if(b>c) max =b; else max =c; }

printf(\}

8ÌâÄ¿£ºÕÒ³ö²»³¬¹ý1000µÄʮλÊý×ÖΪ1£¬¸öλÊý×ÖΪ3»ò7µÄËùÓÐÊý¡£ÀýÈ磺13¡¢17¡¢113¡¢317µÈ¡£ #include main( ) {int x, a,b,c;

printf(\ scanf(\ a=x/100; b=x0/10; c=x; if (b==1) if (c==3||c=7)

printf(\ printf(\ }

9ÌâÄ¿£ºÊäÈëÒ»¸öÕûÊý£¬ÅжϸÃÊýÊÇ·ñÄܱ»3£¬5£¬7Õû³ý£¬²¢Êä³öÒÔÏÂÐÅÏ¢Ö®Ò»£º £¨1£©ÄÜͬʱ±»3£¬5£¬7Õû³ý£»

£¨2£©Äܱ»ÆäÖÐÁ½Êý£¨ÒªÖ¸³öÄÄÁ½¸ö£©Õû³ý£» £¨3£©±»ÆäÖÐÒ»¸öÊý£¨ÒªÖ¸³öÄÄÒ»¸ö£©Õû³ý£» £¨4£©²»Äܱ»3£¬5£¬7ÈÎÒ»¸öÕû³ý¡£ #include main() {int a,b; a=0;

printf(¡°Enter number:¡±); scanf(¡°%d¡±,&b); if(b%3==0) a++; if(b%5==0) a++; if(b%7==0) a++;

if(a==0) printf(¡°\\n The number which can be divided exactly by none\\n¡±); if(a==1) printf(¡°\\n The number which can be divided exactly by one\\n¡±); if(a==2) printf(¡°\\n The number which can be divided exactly by two\\n¡±); if(a==3) printf(¡°\\n The number which can be divided exactly by all\\n¡±); getchar(); }

10ÌâÄ¿£ºÊäÈëÒ»¸ö5λµÄÕýÕûÊý£¬Åж¨¸ÃÕýÕûÊýÊÇ·ñΪһ¸ö»ØÎÄÊý¡££¨Ëùν»ØÎÄËØÊýÊÇÖ¸Õý¶ÁºÍ·´¶Á¶¼ÏàͬµÄÊý£¬ÀýÈç12321£©¡£ main( )

{long g,s,q,w,x; scanf(\ w=x/10000;

q=x000/1000; s=x0/10; g=x;

if (g==w&&s==q) /*¸öλµÈÓÚÍòλ²¢ÇÒʮλµÈÓÚǧλ*/ printf(\£¬x); else

printf(\}

11ÌâÄ¿£º¼ÙÉè±äÁ¿a¡¢b¡¢cΪÕûÊý£¬´Ó¼üÅ̶ÁÈëa¡¢b¡¢cµÄÖµ£¬µ±aΪ1ʱÏÔʾbÓëcÖ®ºÍ£¬aΪ2ʱÏÔʾbÓëcÖ®²î£¬aΪ3ʱÏÔʾbÓëcÖ®»ý£¬aΪ4ʱÏÔʾb/cÖ®ÉÌ£¬ÆäËûÊýÖµ²»×öÈκβÙ×÷¡£ #include main()

{int a,b,c,result; printf(¡°enter x:\\n¡±);

scanf(¡°%d%d%d¡±,&a£¬&b£¬&c); switch(a)

{case 1:result=b+c;

Break;

case 2: result=b-c; Break;

case 3: result=b*c; Break;

case 4: result=b/c; Break;

default:Break; }

printf(¡°a=%d,result=%d\\n¡±a,result);?? }

12ÌâÄ¿£ºÊäÈëÒ»¸öÕûÊý£¬½«ÆäÊýÖµ°´Ð¡ÓÚ10£¬10¡«99£¬100¡«999£¬1000ÒÔÉÏ·ÖÀಢÏÔʾ£¨ÀýÈ磺ÊäÈë358ʱ£¬ÏÔʾ358 is 100 to 999£©¡£

#include main() {int n ;

scanf(¡°%d¡±,&n); if(n<10&&n>0)

printf(¡°%d is <10\\n¡±,n); else if(n>=10&&n<=99) printf(¡°%d is 10 to 99\\n¡±,n); else if(n>=100&&n<=999) printf(¡°%d is 100 to 999\\n¡±,n); else if(n>=1000)

printf(¡°%d is >=1000\\n¡±,n); }

13ÌâÄ¿£º´Ó¼üÅ̶ÁÈëÈý½ÇÐÎÈý±ß,ÅжÏÄÜ·ñ×é³ÉÈý½ÇÐÎ,Èô¿ÉÒÔ×é³ÉÈý½ÇÐÎ,Êä³öÈý½ÇÐεÄÃæ»ý¡£

#include\main()

{int flag=0£» float a,b,c,s£»

printf(\£» scanf(\£» if(a>b+c&&b>a+c&&c>a+b) {s=£¨a+b+c)/2£»

s=sqrt((s-a)*(s-b)*(s-c)); printf(\£» } else

printf(\£» }

14´Ó¼üÅ̶ÁÈëÈý½ÇÐÎÈý±ß,ÅжÏÄÜ·ñ×é³ÉÈý½ÇÐÎ,Èô¿ÉÒÔ×é³ÉÈý½ÇÐÎ,Êä³öÈý½ÇÐεÄÀàÐÍ(µÈ±ß¡¢µÈÑü¡¢Ö±½Ç¡¢Ò»°ã)¡£ #include \main()

{int flag=0£» float a,b,c,s£»

printf(\£» scanf(\£» if(a>b+c&&b>a+c&&c>a+b) {if(a==b&b==c)

printf(¡°eqal triangle ¡±); else if(a==b||b==c||a==c) printf(¡°eqal triangle¡±); else

printf(¡°triangle¡±); } else

printf(\£» }

15ÌâÄ¿£º¼ÆËã¶þ´Î·½³Ì

µÄ¸ù¡£

#include main()

{float a,b,c,d,disc,x1,x2,realpart,imagpart; scanf (¡°%f,%f,%f¡±,&a,&b,&c); printf(¡°The equation¡±); ? if (fabs(a)<=le-6)

printf(¡°is not a quadratic¡±); else

{disc=b*b-4*a*c; if (fabs(disc)<=le-6)

printf(¡°has two equal roots:% 8.4f \\n¡±,-b/(2*a)); else if ((fabs(disc)>le-6 ) {x1=(-b+sqrt(disc))/2*a; x2=(-b-sqrt(disc))/2*a;

printf(¡°has distinct real roots: % 8.4f and % 8.4f \\n¡±,x1,x2); } else

{realpart=-b/(2*a);

imagpart=sqrt(-disc)/(2*a);


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