如何将字符串数组的元素复制到另一个字符串变量？

Question

int main(int argc, string argv[])
{

this is what I want to do but it obviously won't work

    string key = argv[1]; 

here I want to use the 'key' string as an array of characters to deal with a specific character alone

    key = key[1] + 1; 
    printf("%s", key);
}

Answer 1

the main function is not well formatted . argv is a 2D array.

int main(int argc, char **argv)

then you can malloc your key variable and use for example the strcpy function to copy argv[1] in the key variable.

Answer 2

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

int main(int ac, char **av){

    char *key = strdup(av[1]);

    printf("%s", key); 

    free(key)

    return (0);
}