一个字符串有多个输入

Question

I wanted to make a simple program in C that will in while loop get 10 strings user inputs and store them to file food.txt. But there is problem whenever I try to store again user input to variable inputFood. It also send error at 'strcpy(&allFood, inputFood);' Thread 1: Signal SIGABRT. Can anyone help please?

#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>

int main() {

    int i = 0;

    printf("Hello World!\n");

    char * inputFood;
    char allFood = {0};

    FILE * fPointer;
    fPointer = fopen("/Users/Antonio/Desktop/food.txt", "a");

    while (i < 10){

        i = i + 1;
        scanf("%s", inputFood);
        strcpy(&allFood, inputFood);

    }

    fputs(&allFood, fPointer);
    fclose(fPointer);
}

Answer 1

Allocate memory for inputFood, for example 100 chars:

inputFood = malloc(100);

and make allFood an array, not a char:

char allFood[1000];

Because of that you will need to use strcat indstead of strcpy like this:

strcat(allFood, inputFood);

And scan the input food like this:

scanf("%99s", inputFood);

Answer 2

char * inputFood;

You need first allocate memory for it. use malloc/calloc memory allocation.

And and

strcpy use for copy string not char .Also use fgets instead scanf to overcome buffer overflow issue.

Try something like this:

char inputFood[1024];
char allFood[1024];

while (i < 10){

    i = i + 1;

    fgets(inputFood, sizeof(inputFood), stdin);

    if((strlen(allFood)+strlen(inputFood))<1024)
        strncat(allFood, inputFood,strlen(inputFood));
  }

Answer 3

you have to change many things in your program

1)allocate memory for inputFood

inputFood = malloc(100*sizeof(char));

2)as allFood is already a pointer, dont use & in strcpy , and use strcat`.

 strcat(allFood, inputFood);

same goes for fputs

fputs(allFood, fPointer);

3) make allFood a character array, as strcpy and fputs uses character pointers.

char allFood[1000];