学习资料1（条件判断 三目运算符）

#include<iostream.h>int jiafa(int a,int b){     if(b!=80)      {            cout<<"b不等于90"<<endl;       } else      {            cout<<"b等于80"<<endl;        } if(a==98)        {             cout<<"a等于98"<<endl;        } else if(a==43)        {             cout<<"a等于43"<<endl;         } else if(a==90)       {              cout<<"a等于90"<<endl;        }   return (a+b);   }int zuida(int a,int b){ int o; o=a>b?a:b; return o;}int jianfa(int m,int k){   if (m==98)      {            cout<<"m等于98"<<endl;       }  else if(m==76)       {            cout<<"m等于76"<<endl;        }  else if(m==89)        {              cout<<"m等于89"<<endl;       }   if(k==99)       {                cout<<"k等于99"<<endl;       }  else if (k==78)      {               cout<<"k等于78"<<endl;       }  else if (k==65)        {               cout<<"k等于65"<<endl;        }  else if(k==70)         {                cout<<"k等于70"<<endl;         }     return (m-k);}int oppo(int m,int k)       {          int i;          i=m>k?m:k;return i;}     int chengfa(int o,int p) {   if(p==9)       {            cout<<"p等于9"<<endl;       }  else if(p==10)       {             cout<<"p等于10"<<endl;        }   else if(p==90)       {              cout<<"p等于90"<<endl;        }   else if(p==8)       {               cout<<"p等于8"<<endl;        }    if(o==87)        {             cout<<"o等于87"<<endl;        }   else if(o==67)        {             cout<<"o等于67"<<endl;          }   else if(o==88)         {             cout<<"o等于88"<<endl;         }   else if(o==9)        {             cout<<"o等于9"<<endl;        }       return (o*p);   }  int apple(int p,int o)  {        int u;         u=p<o?p:o;  return u;  }                  double  chufa(double  r,double  i)             {  if(r==88)           {                      cout<<"r等于88"<<endl;           }  else if(r==99)           {                      cout<<"r等于99"<<endl;           }  else if(r==21)          {                    cout<<"r等于21"<<endl;           }  else if(r==77)          {                   cout<<"r等于77"<<endl;          }  if(i==90)            {                    cout<<"i等于90"<<endl;            }  else            {                 cout<<"i等于3"<<endl;            }     return (r/i);   } int baba(int r,int i) {       int l;      l = r>i?r:i; return l; }  void main(){int kc = jiafa(90,80);    cout<<"a+b="<<kc<<endl;int ll = zuida(90,80);    cout<<"a大于b"<<endl;     cout<<"#################################"<<endl;int yy = jianfa(98,70);     cout<<"m-k="<<yy<<endl;int i = oppo(98,70);    cout<<"m大于k"<<endl;     cout<<"&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&"<<endl;int nn = chengfa(9,8);      cout<<"o*p="<<nn<<endl;int u = apple(9,8);      cout<<"o大于p"<<endl;      cout<<"###################################"<<endl;double tt = chufa(77,3);      cout<<"r/i="<<tt<<endl;int ld = baba(77,3);       cout<<"r大于i"<<endl;       cout<<"^-^^_^^-^^_^^-^^_^^-^_^^-^^-^^_^^-^^_^^-^^_^^-^^_^^- ^^"<<endl;}