Array initialization spelling

I wrote a function that converts any letter from an array into lowercase, but I want the functionality to be in the main function without using the function I wrote. Somehow I cant do it or don't recognize my mistake:

this is my function:

    void lower(char *a) {            for (int n = 0; n < strlen(a); n++) {              a[n] = tolower(a[n]);           }       }  

and my main function:

int main(int argc, char ** argv) {      if (strcmp(*(argv + 0), "./lower") == 0)      {          for (int i = 1; i < argc; i++)          {                            for (int n = 0; n < strlen(argv[i]); n++)              {                  **(argv+n) = tolower(**(argv+n));              }          }            for (int i = 1; i < argc; i++)          {              printf("%s\n", *(argv + i));          }            return 2;      }      return 0;  }  

I want to do it in the if statement without the function, but don't know where the problem is. It works when I use my function.

https://stackoverflow.com/questions/65746098/array-initialization-spelling January 16, 2021 at 11:05AM