计算机c语言编程

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1、判断是否为润年的软件：输入三个数为之从小到大排序：#includevoidmain(){inta,b,c,t;scanf("%d%d%d",&a,&b,&c);if(a>b){t=a;a=b;b=t;};if(b>c){t=b;b=c;c=t;};if(a>c){t=a;a=c;c=t;};printf("%d<%d<%d",a,b,c);}分段函数软件：#includevoidmain(){doublex,y;scanf("%lf",&x);if(x>0)y=x+2;elseif(x==0)y=x;elsey=x-2;pri

2、ntf("%lf",y);}条件如输入一个数学成绩判断等级软件：#includevoidmain(){doublegrade;scanf("%lf",&grade);if(grade>100

3、

4、grade<0)printf("illegal");elseif(grade>=90)printf("A");elseif(grade>=80)printf("B");elseif(grade>=70)printf("C");elseif(grade>=60)printf("D");elseprintf("E");}从1加到100软件：#include<

5、stdio.h>voidmain(){intsum,i;sum=0;i=0;while(i<=100){sum+=i;i++;}printf("sum=%d",sum);}判断一个数是否为素数#includevoidmain(){inti,n;printf("pleaseinputamunber");scanf("%d",&n);for(i=2;i

6、}或者：#include#includevoidmain(){inti,n,flag=1;printf("pleaseinputamunber");scanf("%d",&n);for(i=2;i<=sqrt(n);i++)if(n%i==0){flag=0;break;}if(flag==0)printf("thenumberisnotaprime");elseprintf("thenumberisaprime");}请输入一个整数：不是素数#include#includevoid

7、main(){inti,n,flag=1;printf("请输入一个整数：");scanf("%d",&n);for(i=2;i<=sqrt(n);i++)if(n%i==0){flag=0;break;}if(flag==0)printf("不是素数");elseprintf("是素数");}#include#includevoidmain(){inti,n,flag=1;printf("请输入一个整数：");scanf("%d",&n);for(i=2;i<=sqrt(n);i++)if(n%i==0){fl

8、ag=0;break;}if(flag==0)printf("不是素数,他的一个因数是");elseprintf("是素数");if(flag==0)printf("%d",i);}输入输出软件（全局变量）；#includeinta[10];voidarrin(){inti;for(i=0;i<10;i++)scanf("%d",&a[i]);}voidarrout(){inti;for(i=0;i<10;i++)printf("%3d",a[i]);printf("");}voidmain(){arrin();arrout();}

9、（局部变量）：#includevoidarrin(int*p){inti;for(i=0;i<10;i++)scanf("%d",&p[i]);}voidarrout(int*q){inti;for(i=0;i<10;i++)printf("%3d",q[i]);printf("");}voidmain(){inta[10];arrin(a);arrout(a);}定义一个十五个元素数组（1）随机赋值（2）输出数组元素（3）每三个数求和（4）输出和值#include#includevoidarrin(i

10、nt*p)//定义产生随