编写一个程序,求s=1+(1+2)+(1+2+3)+…+(1+2+3+…+n)的值
1 #import <Foundation/Foundation.h>
2 3 int main(int argc, const char * argv[]) { 4 @autoreleasepool { 5 int shu=0,he=0; 6 for (int i=1; i<=100; i++) { 7 shu+=i; 8 he+=shu; 9 //printf("he is:%d\n",he); 10 } 11 printf("he is:%d\n",he); 12 return 0; 13 } 14 }
执行结果: