C程序设计例程.doc

1、main()float a,b,c,t; printf(Please input three numbers:); scanf(%f,%f,%f,&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( %f,%f,%fn,a,b,c); 2、main() int x,y; scanf(“%d”,&x); if (x0) y=-1; else if (x=0) y=0; else y=1; printf (“x=%d,y=%dn”,x,y); 3、void main() int x=1,y=0,a=0,b=0; switch(x) case 1: switch(y) case 0: a+; break; case 1: b+; break; case 2: a+;b+; break; case3: a+;b+; printf(“na=%d,b=%d”,a,b); 4、#include main() int i,num=0,a; float sum=0; for(i=0;i10;i+) scanf(%d,&a);if(a=0) continue;num+;sum+=a; printf(%d ,%6.0fn,num,sum); printf(%6.2fn,sum/num); 5、#include main() int a10,i,j,t; printf(Input 10 numbers:n); for(i=0;i10;i+) scanf(%d,&ai); printf(n); for(j=0;j10;j+) for(i=0;iai+1) t=ai; ai=ai+1; ai+1=t; printf(The sorted numbers:n); for(i=0;i10;i+)printf(%d ,ai); 6、#include main() int x=7,y=11; int swap(int a,int b); printf(x=%d,ty=%dn,x,y); printf(swapped:n); swap(x,y); printf(x=%d,ty=%dn,x,y);swap(int a,int b) int temp; temp=a; a=b; b=temp; 7、float average(int stu10, int n); main() int score10, i; float av; printf(Input 10 scores：n); for( i=0; i10; i+ ) scanf(%d, &scorei); av=average(score,10); printf(Average is：%.2f, av); float average(int stu10, int n) int i; float av,total=0; for( i=0; in; i+ ) total = total + stui; av = total/n; return av; 8、#include void swap2(int x,int y) int z; z=x; x=y; y=z;main() int a2=1,2; swap2(a0,a1); printf(a0=%dna1=%dn,a0,a1); 9、float max,min;float average(float array, int n) int i; float sum=array0; max=min=array0; for(i=1;imax) max=arrayi;elseif(arrayimin) min=arrayi; sum+=arrayi; return(sum/n);main() int i; float ave,score10; ave=average(score,10); printf(max=%6.2fnmin=%6.2fn average=%6.2fn,max,min,ave); 10、main()int sum=0,i;scanf(“%d”,&i);do sum=sum+i; i+;while(i=10);printf(“sum=%d”,sum); 11、#include main() int i,sum=0; for(i=1;i=100;i+) sum+=i; printf(%d,sum); 12、#include main() int i,num=0,a; float sum=0; for(i=0;i10;i+) scanf(%d,&a);if(a=0) continue;num+;sum+=a; printf(%d ,%6.0fn,num,sum); printf(%6.2fn,sum/num); 13、#include main() int a23=1,2,3,4,5,6; int b32,i,j; printf(array a:n); for(i=0;i=1;i+)for(j=0;j=2;j+) printf(%5d,aij); bji=aij;printf(n); printf(array b:n); for(i=0;i=2;i+) for(j=0;jy?x:y; return(rz?r:z); int min(int x,int y,int z) int r; r=xy?x:y; return(rz?r:z); 16、main() int *p1,*p2,*p,a,b; scanf(%d,%d,&a,&b); p1=&a; p2=&b; if(ab) p=p1; p1=p2; p2=p; printf(a=%d,b=%dn,a,b); printf(max=%d,min=%dn,*p1,*p2); 17、swap(int x, int y) int temp; temp=x; x=y; y=temp;main() int a,b; scanf(%d,%d,&a,&b); if(ab) swap(a,b); printf(n%d,%dn,a,b); 18、swap(int *p1, int *p2) int temp; temp=*p1; *p1=*p2; *p2=temp;main() int a,b; int *pointer_1,*pointer_2; scanf(%d,%d,&a,&b); pointer_1=&a; pointer_2=&b; if(ab)swap(pointer_1,pointer_2); printf(n%d,%dn,a,b); 19、swap( int *pt1, int *pt2) int temp; temp=*pt1;*pt1=*pt2; *pt2=temp; exchange( int *q1, int *q2, int *q3) if (*q1*q2) swap(q1,q2); if (*q1*q3) swap(q1,q3); if (*q2*q3) swap(q2,q3); main() int a,b,c,*p1,*p2,*p3; scanf (“%d,%d,%d”,&a,&b,&c); p1=&a;p2=&b,p3=&c; exchange (p1,p2,p3); printf(“n%d,%d,%dn”,a,b,c); 20、 #define N 5main( ) int aN =8,6,5,4,1,i,temp;for (i=0;iN;i+) printf(“%4d”,ai);for (i=0;iN/2;i+) temp=ai; ai=aN-i-1; aN-i-1=temp;for (i=0;iN;i+) printf(“%4d”,ai); 21、void main() int a =5,8,7,6