C语言问题，高手速度快点进来

显示全部楼层 · 2007-10-11 22:58:33

别人是不用循环语句,楼上的不行!用取字符啊left(数值,第几位,变量)//取第几位依次类推

千问 · 2007-10-11 22:58:33

#includeint main() {long m,n,sum=0; scanf("%ld",&n); while(n!=0) {m=n%10;sum=sum+m;n=n/10; } printf("sum=%ld\n",sum);} 不用循环也可以，多写几次就行，不过，我觉得还是循环简单

千问 · 2007-10-11 22:58:33

#includemain() { int n, sum = 0; printf("please input a number:(1000-9999)\n"); scanf("%d", &n); sum=n/1000+n/100%10+n/10%10+n%10;printf("sum=%d",sum); }

千问 · 2007-10-11 22:58:33

那用递归可以不?定义全局变量 sum;void add(int a){if(a main() { int n, sum = 0; printf("please input a number:\n"); scanf("%d", &n); if(n>999&&n<10000) {sum=n/1000+n/100%10+n/10%10+n%10;printf("sum=%d",sum); }elseprintf("input error!"); }