int sum=0,x=5；do［sum+=x；］while（!--x）最终sum值是多少?

int sum=0,x=5；do［sum+=x；］while（!--x）最终sum值是多少? int i=0,sum=1; do{sum+=i++;} while(i 如下程序段的运行结果,我算的是110,答案是109,为什么main（）{int i=5,sum=100;do{sum=sum+(--1);}while(i>=0);printf(%d,,i);}我改了下,如果有错,请帮忙指出,哪里错了main（）{int i=5,sum=100;do{sum=sum+(--i);}while(i> int sum=0; for( int i=1; i 求1到10的阶乘之和#include using namespace std;int main(){int a,b=1,c,sum=0;do{a=1;sum=sum+c;b++;for(c=1;a for(int i=0,sum=0;i 将下列递归过程改写为非递归过程,数据结构题目void test(int &sum){int x;scanf(x);if(x==0) sum=0;else{test(sum);sum+=x;}printf(sum);}先给我解释下上面每句的意思,要求句句给出解释, 求pi的近似值#include #include void main() { int i=1; double sum=0; double pi=0,t; do{ sum=sum+1/(float)(i*i); i++;pi=sqrt(6*sum); t=pi-3.14159165;}while(fabs(t)>=1e-5);printf(%f,pi);}为何输不出东西来?错在哪里了? #include int main() { int n,a,sum=1,k; scanf(%d,&n); for(k=n;k>0;k--) sum=sum*k; // a=su 程序填空 计算正整数n各位数字之和 main() {int n,sum=0; scanf (“%d”,&n); while( _⑷___ ) {sum=sum+nmain(){int n,sum=0;scanf (“%d”,&n);while( _⑷___ ){sum=sum+n%10;n= ⑸ ;}printf(“sum=%d”,sum);} dim i as integer dim sum as integer sum=0 for i=0 to 5 sum=sum+i next sum=? 再输出大于平均数的成绩.#include #define NUM 8float average(float x[]){ float sum;int k; sum=x[0];for(k=1;k includeusing namespace std; int main() { int i,n,a[60],sum; for(i=2; in) { sum=0; for(i=n-5; i0) sum+=a[i]; } cout main(){int a[3][3]={1,2,3,4,5,6,7,8,9},i=0,sum=0;do{sum+=a[i][i];i++;}while(i 帮我分析下这个题目#define ADD(x) x+xmain(){int m=1,n=2,k=3;int sum=ADD(m+n)*k;printf(“sum=%d”,sum);}上面程序的运行结果是（ B ）A）sum=9 B) sum=10 C) sum=12 D) sum=18请说明清楚! sum+=x%2?x: sum+=n * factorial(n-1); 这一步函数递归调用的思路int factorial(int n){int sum=0;if(n==1)sum=1;elsesum+=n * factorial(n-1);return sum;}void main(){int i=5;printf(5's factorial is %d ,factorial(i));} C语言一道题目int count = 3;int main() {int i,sum = 0; for(i = 0,sum = 0;i < count;i += 2,count++){static int count = 4;printf(i = %d,count = %d,i,count);sum += count++;printf( count = %d,sum = %d ,count,sum);}sum += count++;printf(count =