初学C语言常用简单程序代码教案资料.doc

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1、__________________________________________________初学C语言常用简单程序代码素数的筛选#include#include#defineN1000intmain(intargc,char*argv[]){inti,j,num[N];for(i=0;i

2、]%num[i]==0)num[j]=0;}}}for(i=1;imain(){____________________________________________________________________________________________________intx,s,t,d;scanf("%d",&x);s=x%60;t=(x/60)%60;d=(x/60)/60;pr

3、intf("%d时%d分%d秒",d,t,s);}三个数的交换#includevoidmain(){inta,b,c,t;scanf("%d%d%d",&a,&b,&c);printf("Theoriginalnumber:a=%d,b=%d,c=%d",a,b,c);t=a,a=b,b=t;t=a,a=c,c=t;printf("afterswap:a=%d,b=%d,c=%d",a,b,c);}switch语句的运用#includemain(){inta,m;printf("pleas

4、einputanumber:");scanf("%d",&a);switch(a/10){case10:case9:m=5;break;case8:m=4;break;____________________________________________________________________________________________________case7:m=3;break;case6:m=2;break;default:m=1;}printf("m=%d",m);}判断奇数和偶数#include

5、o.h>main(){intx;printf("Pleaseinputanumber:");scanf("%d",&x);if(x%2==0)printf("thisisaoushu!");elseprintf("thisisajishu!");}小写改大写，若是大写则不变includemain(){charc1,c2;printf("Inputaletter");scanf("%c",&c1);c2=('a'<=c1&&c1<='z')?(c1-'a'+'A'):c1;printf("%c",c2);ge

6、tchar();return0;}输入一个数，输出这个数是几位数____________________________________________________________________________________________________#includemain(){intx,n;printf("pleaseinputanumber:");scanf("%d",&x);n=0;while(x!=0){x=x/10;n++;}printf("%d",n);}输入一个数，判断它是几位数，然

7、后逆序输出#includeintmain(){intnum;intlen=0;inttemp=0;printf("Pleaseinputanumber:");scanf("%d",&num);while((num%10)!=0){temp=temp*10+(num%10);len++;num=num/10;}printf("length=%d",len);printf("Reverseis%d",temp);________________________________________________

8、____________________________________________________}打印水仙花数#includemain(){intx,a,b,c;for(x=100;x<=999;x++){a=x%10;b=(x/10)