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1.6.1 for语句
for语句的示例及其运行逻辑如下图所示。
![](https://epubservercos.yuewen.com/B6CE70/30655059804960606/epubprivate/OEBPS/Images/48757_20_2.jpg?sign=1738885037-Vlo8bXJJGpBPWw5tWnEPbG9PrOXiM5Jp-0-6132554a10ca191606094b9934fe52e5)
训练10(P5722):计算1+2+3+…+(n-1)+n的值,其中,正整数n不大于100。
![](https://epubservercos.yuewen.com/B6CE70/30655059804960606/epubprivate/OEBPS/Images/48757_20_3.jpg?sign=1738885037-xBVDAofwZ34cD2mSeSTMt2DqtwISic8W-0-a989df4cfe895fe7503289bc5c492938)
![](https://epubservercos.yuewen.com/B6CE70/30655059804960606/epubprivate/OEBPS/Images/48757_21_1.jpg?sign=1738885037-S7s2hrYJbR8vHn0tFKsti1ggzBtu0Lcz-0-4482ddd8b7b5c1fe2455de775303ab01)
训练11(B2098):给定含有n个整数的序列,要求对这个序列进行去重操作。所谓去重,是指对这个序列中每个重复出现的数,只保留该数第一次出现时的位置,删除其余位置。
![](https://epubservercos.yuewen.com/B6CE70/30655059804960606/epubprivate/OEBPS/Images/48757_21_2.jpg?sign=1738885037-we3obz5nkNjYVSxxRCmRsfLIx8grxuLF-0-ebca8dcfeaff93262aad33ad1bc2b15b)
1.continue语句
continue语句用于跳过后面的循环体,直接循环更新且执行下一次循环,其运行逻辑如下图所示。
![](https://epubservercos.yuewen.com/B6CE70/30655059804960606/epubprivate/OEBPS/Images/48757_21_3.jpg?sign=1738885037-paOOPjpAxayzij7dEAYna9hsY7pvRyld-0-a6a5544a2dfc2e394b4c127e422c0eae)
2.break语句
break语句用于直接跳出所在的循环,其运行逻辑如下图所示。
![](https://epubservercos.yuewen.com/B6CE70/30655059804960606/epubprivate/OEBPS/Images/48757_22_1.jpg?sign=1738885037-2OKmGaHXNznXAY8qsQqB4ITAuGRDCEFT-0-edca63f7327a49c5f99bf413273b91fe)
训练12(B2059):计算非负整数m~n(包括m和n)之间所有奇数的和,其中,m不大于n,n不大于300。例如m=3,n=12,其和为3+5+7+9+11=35。
![](https://epubservercos.yuewen.com/B6CE70/30655059804960606/epubprivate/OEBPS/Images/48757_22_2.jpg?sign=1738885037-DTkZDSUIyXxdH5wy4kre5sSE6B7hriuZ-0-02448c6d7b9f038e31ae0bffcc822793)
训练13(B2128):求在2~n(n为大于2的正整数)区间有多少个素数。
![](https://epubservercos.yuewen.com/B6CE70/30655059804960606/epubprivate/OEBPS/Images/48757_22_3.jpg?sign=1738885037-oU7jkZRlAHkzfQGHVTF372rNDXlt0Qc8-0-2949efd4ac4eb393fe888bbce70bbe2b)
![](https://epubservercos.yuewen.com/B6CE70/30655059804960606/epubprivate/OEBPS/Images/48757_23_1.jpg?sign=1738885037-zWnk2Yc8yeplbUFp9GrVR2qgg7Z1nYg0-0-e7c81479f818725fb6ecef8d7ba63c5e)