Question

How to create a dynamic string in a function in C

Answer 1

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

void getstr(char **pp, char *str) {
    char *tmp = malloc(strlen(str) + 1);
    strcpy(tmp, str);
    *pp = tmp;
}

int main(void)
{
    char *p;

    getstr(&p, "C Programming");
    
    printf("%s\n", p);

    free(p);

    return 0;
}


   
/*
run:
   
C Programming

*/

 

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