错误的输出，不明白为什么 C

Question

I am a beginner in C programming and I built a function that recieves the string "HodHasharon,frozenYogurt,100" . The function cuts the string into 3 pieces where every piece is a field of my City struct.

I want to put "HodHasharon" into City pcity.name (name of the city), "frozenYogurt" into pcity.popularFood (popular food) and number of residents ( 100 ) into pcity.residents .

When i am debugging the output in my function the output is correct but when i print from the main.c I got a concatenated string.

For example, when I print pcity.name I get "HodHashafrozenYod" instead of "HodHasharon" but if I do printf at my function printf->name I get the correct output of "HodHasharon"

What am I doing wrong?

struct of City:

typedef struct City
{
    char *name;
    char * popluarFood;
    int numberOfPeople;

} City;

the function:

City * cutCityData (char *singleLine)
{
    City* pcity=(City*)malloc(sizeof(City));
    int firstIndex=1;
    int endIndex=1;
    int checkItarion=0;
    while(endIndex<strlen(singleLine))
    {//while
        while (singleLine[endIndex] != ',')
        {//while2
            endIndex++;
        }//while2
        checkItarion++;
        char cityDetails[endIndex - firstIndex +1];
        memcpy(cityDetails,&singleLine[firstIndex], endIndex);
        cityDetails[endIndex - firstIndex] = '\0';
        if (checkItarion == 1) {
            pcity->name = (char *) malloc(cityDetails);
            strcpy(&(pcity->name), cityDetails);
            endIndex++;
            firstIndex = endIndex;
        }
        if (checkItarion == 2) {
            pcity->popluarFood = (char *) malloc(cityDetails);
            strcpy(&(pcity->popluarFood), cityDetails);
            endIndex++;
            firstIndex=endIndex;
            break;
        }
    }//while
    char cityDetails[strlen(singleLine) - firstIndex + 1];
    memcpy(cityDetails, &singleLine[firstIndex], sizeof(singleLine-1));
    int resdints=atoi(cityDetails);
    pcity->numberOfPeople=resdints;
    return pcity;
    }

from main:

City* pCity=cutCityData(singLine);
printf("%s\n", &(pCity->name));

Answer 1

&(pcity->name) is the address of the pointer variable. You want to copy the string to the memory that it points to, not copy over the pointer. So change:

strcpy(&(pcity->name), cityDetails);

to

strcpy(pcity->name, cityDetails);

You're also giving the wrong argument to malloc() . cityDetails is an array, but the argument should be the number of bytes you want to allocate. So change

pcity->name = (char *) malloc(cityDetails);

to:

pcity->name = malloc(strlen(cityDetails) + 1);

These changes also need to be made for the code that fills in pcity->popularFood as well.

This is wrong:

memcpy(cityDetails, &singleLine[firstIndex], sizeof(singleLine-1));

singleLine is a pointer, so sizeof(singleLine-1) is the number of bytes in a pointer, not the length of the string. This should be:

memcpy(cityDetails, &singleLine[firstIndex], endIndex + 1);