小编dhi*_*nta的帖子

int main()
{
    char *a1[10] = {"123","121"};
    int i =0;
    char *a=NULL;
    for(i=0;i<2;i++)
    {
        a=strcat(a1[i],"0000");
        printf("values %s",a);

    }
}

此代码的输出为$ ./a.exe值1230000值0000000

但它应该是$ ./a.exe值1230000值1210000

请告诉我我错在哪里

这是代码

#include <stdio.h>
void swap(int *a,int *b)
{
    int *tmp;
    *tmp=*a;
    *a=*b;
    *b=*tmp;
}

void main()
{
    int i,j;
    printf("Enter any number\n");
    scanf("%d",&i);
    printf("Enter another number\n");
    scanf("%d",&j);
    printf("Numbers before swap\n");
    printf("value of i : %d\n",i);
    printf("value of j : %d\n",j);
    swap(&i,&j);
    printf("Numbers after swap\n");
    printf("value of i : %d\n",i);
    printf("value of j : %d\n",j);
}

上面一个是我的代码,它工作正常但是当输出在控制台上打印时它会给出Segmentation故障(core dumped)这是o/p

abc:~/Desktop/C$ ./a.out

Enter any number

34

Enter another number

54

Numbers before swap

value of i : 34

value of j : 54 …