I have to print last and second last characters from a word.

Question

eg. when input is APPLE then output should be E L but i am confused with functions written after main(). please help

char* lastLetters(char* word) {

//what should i write here???

}

int main() {

FILE *f = stdout;

char *output_path = getenv("OUTPUT_PATH");
if (output_path) {
f = fopen(output_path, "w");
}

char* res;
char* word;
word = (char *)malloc(512000 * sizeof(char));
scanf("\n%[^\n]",word);

res = lastLetters(word);
fprintf(f, "%s\n", res);

fclose(f);
return 0;
}

Answer 1

i m getting no output

Answer 2

return &[(strlen(word)-2]);
I m getting output as LE instead of E L

Answer 3

I tried it but it was showing some error and sometimes no output

Answer 4

Here you go.

char *res = (char *) malloc(3*sizeof(char));//one extra character to store NULL char.
int i, j;
for(i = 0; word[i] != '\0'; i++) ;
for(j =0; i>=0 && j <2; i--,j++) {
res[j++] = word[--i];
}
res[j] = '\0';
return res;

Answer 5

First, using a loop you should traverse till the end of the word. Copy the last two characters from backwards into a new dynamically created array, and then return it. Try implementing this yourself. If you are unable to, I will help you.

Answer 6

@Alind, can you show us what you tried?