第一章5:#include using namespace std;int main() coutThisis; coutaC+; coutprogram.endl; return 0;6:#include using namespace std;int main() int a,b,c; a=10; b=23; c=a+b; couta+b=; coutc; coutendl; return 0;7:#include using namespace std;int main() int a,b,c; int f(int x,int y,int z); cinabc; c=f(a,b,c); coutcendl; return 0;int f(int x,int y,int z) int m;if (xy) m=x; else m=y; if (zm) m=z; return(m); 8: #include using namespace std;int main() int a,b,c; cinab; c=a+b; couta+b=a+bendl; return 0; 9: #include using namespace std;int main()int add(int x,int y); int a,b,c; cinab; c=add(a,b); couta+b=cendl; return 0;int add(int x,int y)int c; c=x+y; return(c);10:#include using namespace std;int main()void sort(int x,int y,int z);int x,y,z; cinxyz; sort(x,y,z); return 0;void sort(int x, int y, int z) int temp; if (xy) temp=x;x=y;y=temp; / 内3个语句的作用是将x和y的值互换) if (zx) coutz,x,yendl; else if (zy) coutx,z,yendl; else coutx,y,zendl; 11:#include using namespace std;int main()int max(int a,int b,int c=0); int a,b,c; cinabc; coutmax(a,b,c)=max(a,b,c)endl; coutmax(a,b)=max(a,b)a) a=b; if(ca) a=c; return a;12:#include using namespace std;int main() void change(int ,int ); int a,b; cinab; if(ab) change(a,b); coutmax=a min=bendl; return 0;void change(int ,int ) int r1,r2,temp; temp=r1; r1=r2; r2=temp; 13:#include using namespace std;int main()void sort(int &,int &,int &); int a,b,c,a1,b1,c1; coutabc; a1=a;b1=b;c1=c; sort(a1,b1,c1); couta b c in sorted order is ; couta1 b1 c1j) change(i,j); if (ik) change(i,k); if (jk) change(j,k);void change(int &x,int &y) int temp; temp=x; x=y; y=temp;14:#include #include using namespace std;int main() string s1=week,s2=end; couts1=s1endl; couts2=s2endl; s1=s1+s2; coutThe new string is:s1endl; return 0; 15:#include #include using namespace std;int main() string str; int i,n; char temp; coutstr; n=str.size(); for(i=0;in/2;i+)temp=stri;stri=strn-i-1;strn-i-1=temp; coutstrendl;return 0; 16:#include #include using namespace std;int main() int i; string str5=BASIC,C,FORTRAN,C+,PASCAL; void sort(string ); sort(str); coutthe sorted strings :endl; for(i=0;i5;i+) coutstri ; coutendl; return 0;void sort(string s)int i,j; string t; for (j=0;j5;j+) for(i=0;isi+1) t=si;si=si+1;si+1=t; 17: #include #include using namespace std;int main() long c5=10100,-123567, 1198783,-165654, 3456; int a5=1,9,0,23,-45; float b5=2.4, 7.6, 5.5, 6.6, -2.3 ; void sort(int );void sort(float ); void sort(long ); sort(a); sort(b); sort(c); return 0;void sort(int a)int i,j,t; for (j=0;j5;j+) for(i=0;iai+1) t=ai;ai=ai+1;ai+1=t; coutthe sorted numbers :endl; for(i=0;i5;i+) coutai ; coutendlendl; void sort(long a)int i,j; long t; for (j=0;j5;j+) for(i=0;iai+1) t=ai;ai=ai+1;ai+1=t; coutthe sorted numbers :endl; for(i=0;i5;i+) coutai ; coutendlendl;void sort(float a)int i,j; float t; for (j=0;j5;j+) for(i=0;iai+1) t=ai;ai=ai+1;ai+1=t; coutthe sorted numbers :endl; for(i=0;i5;i+) coutai ; coutendlendl;18: #include #include using namespace std;template void sort(T a) int i,j,min; T t; for(i=0;i5;i+)min=i; for (j=i+1;jaj) min=j; t=ai; ai=amin; amin=t; coutthe sorted numbers :endl; for(i=0;i5;i+) coutai ; coutendlendl;int main() int a5=1,9,0,23,-45; float b5=2.4, 7.6, 5.5, 6.6, -2.3 ; long c5=10100,-123