c语言学习路程——前n项求和
1 #include <stdio.h> 2 3 int main() { 4 int n; 5 double dividend, divisor; 6 double sum = 0.0; 7 int i; 8 double t; 9 10 scanf_s("%d", &n); 11 12 dividend = 2; 13 divisor = 1; 14 for (i = 1; i <= n; i++) { 15 sum += dividend / divisor; 16 t = dividend; 17 dividend = dividend + divisor; 18 divisor = t; 19 } 20 printf("%f %f\n", dividend, divisor); 21 printf("%.2f\n", sum); 22 return 0; 23 }
