C/C++ 字符串输出“烫烫..”

最后一次执行 strcpy_s 时莫名其妙字符串拷贝不过来，断点检查时就是“烫烫..”了

#include<stdio.h>
#include<string.h>

struct job {
    char name[10];      //作业的名字
    int starttime;      //作业到达系统时间
    int needtime;       //作业运行时间
    int endtime;        //作业结束时间   
    int runtime;        //作业周转时间

};
void strcopy(char *str1, char *str2) {
    char temp[10];
    strcpy_s(temp, strlen(str1) + 1, str1);
    strcpy_s(str1, strlen(str2) + 1, str2);
    strcpy_s(str2, strlen(temp) + 1, temp);
}
void sort(struct job jobs[50], int n);
void FCFS(struct job jobs[50], int n);
void SJF(struct job jobs[50], int n);
void result(struct job jobs[50], int n);
int main()
{
    struct job jobs[50];
    int n, i;

    printf("输入作业个数:");
    scanf_s("%d", &n);
    printf("输入每个作业的作业名,到达时间,服务时间:\n");
    for (i = 0; i < n; i++)
    {
        scanf_s("%s", jobs[i].name, 10);
        scanf_s("%d", &jobs[i].starttime);
        scanf_s("%d", &jobs[i].needtime);
    }
    printf("\n");
    printf("作业名\t到达系统时间\t运行时间\n");
    for (i = 0; i < n; i++)
    {
        printf("%s\t      %d\t         %d\n", jobs[i].name, jobs[i].starttime, jobs[i].needtime);
    }


    FCFS(jobs, n);
    printf("先来先服务（FCFS）算法运行结果：\n");
    result(jobs, n);


    SJF(jobs, n);
    printf("最短作业优先算法（SJF）运行结果：\n");
    result(jobs, n);

}
void FCFS(struct job jobs[50], int n)
{
    sort(jobs, n);
    int i;
    for (i = 0; i < n; i++)
    {
        if (i == 0) {
            jobs[i].runtime = jobs[i].needtime;
            jobs[i].endtime = jobs[i].starttime + jobs[i].needtime;
        }
        else if (jobs[i].starttime > jobs[i - 1].endtime) {
            jobs[i].runtime = jobs[i].needtime;
            jobs[i].endtime = jobs[i].starttime + jobs[i].needtime;
        }
        else {
            jobs[i].runtime = jobs[i].needtime + jobs[i - 1].endtime - jobs[i].starttime;
            jobs[i].endtime = jobs[i].starttime + jobs[i].runtime;
        }
    }
}



void SJF(struct job jobs[50], int n)
{
    int i = 0, j = 0, b = 1, sum = 0;
    char temp[10];
    int min;
    sort(jobs, n);

    jobs[0].endtime = jobs[0].starttime + jobs[0].needtime;
    jobs[0].runtime = jobs[0].needtime;

    while (b < n)
    {
        for (i = b; i < n; i++)
        {
            if (jobs[i].starttime <= jobs[j].endtime)
                sum = sum + 1;
        }


        for (i = b; i <= sum - 1; i++)
        {
            if (jobs[i].needtime > jobs[i + 1].needtime)
            {
                min = jobs[i].starttime;
                jobs[i].starttime = jobs[i + 1].starttime;
                jobs[i + 1].starttime = min;

                min = jobs[i].needtime;
                jobs[i].needtime = jobs[i + 1].needtime;
                jobs[i + 1].needtime = min;
                strcopy(jobs[i].name, jobs[i + 1].name);
            }
        }
        b = sum;
        j = b - 1;
    }


    for (i = 1; i < n; i++)
    {
        if (jobs[i].starttime > jobs[i - 1].endtime)
        {
            jobs[i].endtime = jobs[i].starttime + jobs[i].needtime;
            jobs[i].runtime = jobs[i].needtime;
        }
        else
        {
            jobs[i].endtime = jobs[i - 1].endtime + jobs[i].needtime;
            jobs[i].runtime = jobs[i].endtime - jobs[i].starttime;
        }
    }
}


void result(struct job jobs[50], int n)
{
    int i;
    int sum_runtime = 0;
    double  sum_dqzztime = 0.00;
    printf("作业名\t到达时间\t运行时间\t完成时间\t周转时间\n");
    for (i = 0; i < n; i++)
    {
        printf("%s\t     %d\t       %d\t       %d\t      %d\n", jobs[i].name, jobs[i].starttime, jobs[i].needtime, jobs[i].endtime, jobs[i].runtime);

        sum_runtime = sum_runtime + jobs[i].runtime;
    }
    printf("\n");
}

void sort(struct job jobs[50], int n)
{
    int i = 0, b = 0;
    char temp[10];
    int min;
    for (i = 0; i < n - 1; i++) //按作业到达系统时间进行排序，最早到达的排在最前面 
    {
        if (jobs[i].starttime > jobs[i + 1].starttime)
        {
            min = jobs[i].starttime;
            jobs[i].starttime = jobs[i + 1].starttime;
            jobs[i + 1].starttime = min;

            min = jobs[i].needtime;
            jobs[i].needtime = jobs[i + 1].needtime;
            jobs[i + 1].needtime = min;
            strcopy(jobs[i].name, jobs[i + 1].name);
        }
    }
}

结束了，是SJF数组越界

字符数组末尾没有加上'\0'结束标识