#include <stdio.h> void main( ) { int i, b = 1; double s; s = 0 ;/*给s赋值*/ for(i = 1; i <= 15; i++) { s = s +double(i)/double(b) ;/*根据公式输入算式,因为是分式把i,b定义为双精度浮点型*/ b = b + 2; } printf("sum = %f " , s);/*sun是双精度浮点型,输出sum*/ }
#include <stdio.h> void main( ) { int i, b = 1; double s; s = 0 ;/*给s赋值*/ for(i = 1; i <= 15; i++) { s = s +double(i)/double(b) ;/*根据公式输入算式,因为是分式把i,b定义为双精度浮点型*/ b = b + 2; } printf("sum = %f " , s);/*sun是双精度浮点型,输出sum*/ }