C语言程序设计 入门源代码代码集合

C语言程序设计入门源代码代码集合C语言程序设计入门源代码代码集合C语言程序设计入门源代码代码集合C语言程序设计入门源代码代码集合编制仅供参考审核批准生效日期地址：电话：传真:邮编:演示1#include<>voidprint_star(void){printf("*****************\n");}voidprint_welcome(void){printf("Clanguage,welcome!\n");}voidmain(){print_star();print_welcome();print_star();getchar();}演示2#include""intsum(inti,intj){return(i+j);}voidmain(){intn1,n2;printf("input2numbers:\n");scanf("%d%d",&n1,&n2);printf("thesum=%d\n",sum(n1,n2));getchar();}演示3#include""intmaxnum(int,int,int);main(){inta,b,c;printf("Pleaseenter3numbers:\n");scanf("%d,%d,%d",&a,&b,&c);printf("Maxnumis%d\n",maxnum(a,b,c));return0;}intmaxnum(intx,inty,intz){intmax=x;if(y>max)max=y;if(z>max)max=z;returnmax;}演示4#include<>ints1(intn){ intj,s;s=0;for(j=1;j<=n;j++) s=s+j; returns;}intsum(intn){ inti,s=0; for(i=1;i<=n;i++) s=s+s1(i); returns;}voidmain(){ intn; printf("n:"); scanf("%d",&n); printf("s=%d\n",sum(n));}演示5#include<>voidfunc(intn){ inti; for(i=n-1;i>=1;i--) n=n+i; printf("n=%d\n",n);}voidmain(){ intn; printf("Inputn:"); scanf("%d",&n); func(n); printf("n=%d\n",n);}演示6#include<>voidswap(inta,intb){ inttemp; temp=a;a=b;b=temp; printf("swap:a=%d,b=%d\n",a,b);}voidmain(){ inta,b; a=3;b=10; swap(a,b); printf("a=%d,b=%d\n",a,b);}演示7#include<>intfunc(inta,intb){ intc; c=a+b; returnc;}voidmain(){ intx=6,y=7,z=8,r; r=func((x--,y++,x+y),z--); printf("%d\n",r);}演示8#include<>max(floatx,floaty){ returnx>yx:y;}voidmain(){ printf("%d\n",max(2,);}演示9#include<>intsum(intn){ inti,s=0; for(i=0;i<=n;i++) s=s+i; returns;}voidmain(){intm,sn;scanf("%d",&m);sn=sum(m);printf("thesumis%d\n",sn);}演示10#include<>voidswap(intx,inty);intmain(){inta,b;printf("input2numbers:\n");scanf("%d,%d",&a,&b);printf("inputnumberis:a=%d,b=%d\n",a,b);swap(a,b);printf("input2numbersis:a=%d,b=%d\n",a,b);return0;}voidswap(intx,inty){inttemp;temp=x;x=y;y=temp;printf("swapnumberis:x=%d,y=%d\n",x,y);}演示11#include""#defineK3#defineN5longf2(intn,intk){longpower=n;inti;for(i=1;i<k;i++)power*=n;returnpower;}longf1(intn,intk){longsum=0;inti;for(i=1;i<=n;i++)sum=sum+f2(i,k);returnsum;}intmain(void){printf("sumof%dpowerofintegerfrom1to%d=",K,N);printf("%ld\n",f1(N,K));return0;}演示12#include<>intmin(inta,intb);intmain(void){intj,k,mininum;printf("input2integers:");scanf("%d,%d",&j,&k);mininum=min(j,k);printf("\nofthetwovalues%dand%d,themininumis%d\n",j,k,mininum);return0;}intmin(inta,intb){if(a<b)returna;elsereturnb;}演示13#include<>intfunc(inta,intb);voidmain(){intk=4,m=1,p; p=func(k,m);printf("%d\n",p);}intfunc(inta,intb){intm=0,i=2;i+=m+1;m=i+a+b;returnm;}演示14#include<>intmax(intx,inty){ intz; z=x>yx:y; returnz;}voidmain(){ externintA,B;//声明外部变量 printf("%d\n",max(A,B));}intA=13,B=-8;//定义外部变量演示15#include<>intf1(intxb){externintxa;return(xa*xb);}intmain(void){externintxb;intxa=5;printf("xa=%d,xb=%d,result=%d",xa,xb,f1(xa));return0;}intxa=3,xb=4;演示16#include<>voidnum(){ externintx,y; inta=15,b=10; x=a-b; y=a+b;}intx,y;voidmain(){ inta=7,b=5; x=a+b;y=a-b; num();printf("%d,%d\n",x,y);}演示17#include<>voidmain(){voidswap();externinta,b; a=3; b=10; swap(); printf("a=%d,b=%d\n",a,b);}inta,b;voidswap(){ inttemp; temp=a;a=b;b=temp;}演示18#include<>voidauto_static(void){intvar_auto=0;staticintvar_static=0;printf("var_auto=%d,var_static=%d\n",var_auto++,var_static++);}voidmain(){inti;for(i=0;i<3;i++)auto_static();}演示19#include<>voidswap(intx,inty){intt;t=x;x=y;y=t;}voidmain(){inta,b;scanf("%d,%d",&a,&b);swap(a,b);printf("%d,%d\n",a,b);}----------------------------------------------------------------------------------------------------------#include<>intx,y;voidswap(int，,int){intt;t=x;x=y;y=t;}voidmain(){scanf("%d,%d",&x,&y);swap(x,y);printf("%d,%d\n",x,y);}#include<>intx,y;voidswap(intx,inty){intt;t=x;x=y;y=t;}voidmain(){scanf("%d,%d",&x,&y);swap(x,y);printf("%d,%d\n",x,y);}----------------------------------------------------------------------------------------------------------------------演示20#include<>intfac(intn){staticintf=1;f=f*n;returnf;}voidmain(){inti;for(i=1;i<=5;i++)printf("%d!=%d\n",i,fac(i));}演示21#include""intmain(void){inta=2;intp=a;printf("%d\n",a);{inta=7;printf("%d\n",a);printf("%d\n",p);}printf("%d\n",++a);return0;}演示22#include<>intfunc(inta,intb);voidmain(){intk=4,m=1,p; p=func(k,m);printf("%d,",p); p=func(k,m);printf("%d\n",p);}intfunc(inta,intb){staticintm=0,i=2;i+=m+1;m=i+a+b;returnm;}演示23#include<>f(intn){ intc; if(n==6)c=1; else c=(f(n+1)+1)*2; returnc;}voidmain(){printf("%d\n",f(1)); }演示24#include<>longpower(intn){longf;if(n>1)f=power(n-1)*n;elsef=1;returnf;}main(){intn;longx;printf("inputanintegernumber:\n");scanf("%d",&n);x=power(n);printf("%d!=%ld\n",n,x);getchar();}演示25#include<>intfact(){ staticinti=5; if(i==0)return1; else { i--; return(i+1)*fact(); }}voidmain(){printf("fact=%d\n",fact());}演示26#include<>intfun(intk);intw=3;voidmain(){ intw=10; printf("%d\n",fun(5)*w);}intfun(intk){ if(k==0)returnw; return(fun(k-1)*k);}演示27#include<>intfac(intn){registerinti,f=1;for(i=1;i<=n;i++)f=f*i;returnf;}main(){inti;for(i=1;i<=5;i++)printf("%d!=%d\n",i,fac(i));}演示28#include<>age(intn){intc;if(n==1)c=10;elsec=age(n-1)+2;returnc;}voidmain(){printf("%d\n",age(5));}演示29#include<>#definePI#definecircuit(r)2*PI*r#definearea(r)PI*r*rvoidmain(){floatra,c,a;scanf("%f",&ra);c=circuit(ra);a=area(ra);printf("ra=%f,c=%f,a=%f",ra,c,a);}汉诺塔（演示30）#include""voidmove(int,char,char,char);intmain(void){intn;pr