Question

我在循环时无法弄清楚这一点。我理解这个概念，我不知道该怎么做才能增加它。另外，由于某种原因，我的跑步总数不起作用？

这背后的想法是设定一个存钱的目标。每次我在罐子里放一定数量的钱，我都希望它能给我罐子里的总金额，还告诉我需要多少钱放在罐子里才能达到我的目标。

这是我的代码：

#include <stdio.h>

int main() {

    int goal;
    int total = 0;
    int deposite;
    int ammountNeeded;

    printf("How much money would you like to save?\n ");
    scanf("%i", &goal);
    printf("How much money are you putting in the jar?\n");
    scanf("i%", &deposite);

    total = total + deposite;
    ammountNeeded = goal - deposite;

    while (goal > total) {
        printf("How much money are you putting in the jar?\n ");
        scanf("i%", &deposite);
        printf("You have saved R%i. ", total);
        printf("You need to save another R%i in order to reach your goal.\n ",ammountNeeded);
    }

    if (total >= goal) {
        printf("Well done! you have sucsessfully saved R%i", goal);
    }

    return 0;
}

Answer 1

while循环有一个条件。只要条件为真，它就会执行主体。在您的情况下，条件不会更改，因为比较的2个变量都不会更改其在循环内的值。你应该增加总数或减少目标。

Answer 2

这应该解决它：

while (goal > total) {
    printf("How much money are you putting in the jar?\n ");
    scanf("i%", &deposite);
    total = total + deposite;    //Add this 
    printf("You have saved R%i. ", total);
    ammountNeeded = goal - total;  // And perhaps add this
    printf("You need to save another R%i in order to reach your goal.\n ",ammountNeeded);

}

如果没有任何更改来终止它，while循环不起作用

2 个答案: