1,
#include<stdio.h> main(){ int i=1;int sum=0; while(i<=21) {sum+=i; i+=2; } printf("sum=%d\n",sum); }
2, #include<stdio.h> main(){ int i=1;double sum=0; int n;scanf("%d",&n); while(i<=n) { sum+=1.0/i; i+=2; } printf("sum=%f\n",sum); }
3, #include<stdio.h> main(){ int i=1,f=1; int n;scanf("%d",&n); while(i<=n) { f*=i; i++; } printf("f=%ld\n",f); }
4, #include<stdio.h> main(){ int a,b,c; int i=100; while(i<1000) { a=i/100; b=i%100/10; c=i%10; if(i==a*a*a+b*b*b+c*c*c) printf("%4d\n",i); i++; } }
5, #include<stdio.h> main(){ int a,b,i; scanf("%d%d",&a,&b); i=a+1; while(i<=b-1){ printf("%d\n",i); i++; } }
6, #include<stdio.h> main(){ int i,sum=0; for(i=1;i<=100;i++) { if(i%3==0&&i%5==0) { sum=sum+i; } } printf("sum=%d\n",sum); }