1,#include <stdio.h>int main(){int s=0;int i;for(i=22;i<=1002;i+=20){s=s+i;}printf("%d",s);return 0;}\
#include <stdio.h>int main(){int s=0;int i;i=22;while(i<=1002){s=s+i;i+=20;}printf("%ld",s);return 0;}
#include <stdio.h>int main(){int s=0;int i;i=22;do{s=s+i;i+=20;}while(i<=1002);printf("%ld",s);return 0;}
2,#include <stdio.h>int main(){int a,b,c,sum;int i=0;for(sum=100;sum<1000;sum++){a=sum/100;b=sum%100/10;c=sum%100%10;if(a*a*a+b*b*b+c*c*c==sum){printf("%d\n",sum);i++;}}printf("%d",i);return 0;}
3,
#include <stdio.h>int main(){int a,b,c,i=0,d;for(a=1;a<=5;a++){ for(b=1;b<=5;b++){ for(c=1;c<=5;c++){ d=a*100+b*10+c; if(a!=b&&b!=c&&c!=a){ printf("%d\n",d); i++; }if(c==5) printf("\n"); } }}printf("sum=%d\n",i);return 0;}
转载于:https://www.cnblogs.com/P201821430034/p/10838699.html
