Eroare de compilare: user.c: In function ‘introducere_chei’: user.c:68:13: warning: implicit declaration of function ‘isalpha’ [-Wimplicit-function-declaration] if(!isalpha(token[0])) ^ user.c:59:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, numar_introd_in_output = 0; ^ user.c:59:9: warning: unused variable ‘i’ [-Wunused-variable] int i, j, numar_introd_in_output = 0; ^ user.c:58:23: warning: unused variable ‘aux’ [-Wunused-variable] char c, str[100], aux[20], *token; ^ user.c:58:10: warning: unused variable ‘c’ [-Wunused-variable] char c, str[100], aux[20], *token; ^ user.c: In function ‘introducere_elemente’: user.c:126:21: warning: implicit declaration of function ‘strrev’ [-Wimplicit-function-declaration] strcpy(token, strrev(strrev(token + 1))); ^ user.c:126:21: warning: passing argument 2 of ‘strcpy’ makes pointer from integer without a cast [enabled by default] In file included from /usr/include/features.h:357:0, from /usr/include/stdio.h:28, from user.c:1: /usr/include/i386-linux-gnu/bits/string3.h:103:1: note: expected ‘const char * restrict’ but argument is of type ‘int’ __NTH (strcpy (char *__restrict __dest, __const char *__restrict __src)) ^ user.c:114:23: warning: unused variable ‘j’ [-Wunused-variable] int numar = 0, i, j; ^ user.c: In function ‘main’: user.c:194:5: warning: implicit declaration of function ‘getch’ [-Wimplicit-function-declaration] getch(); ^ user.c:149:62: warning: unused variable ‘i’ [-Wunused-variable] int nr_linii, nr_chei, nr_carac, nr_cuv, nr_elem, numar, i; ^ user.c:149:55: warning: unused variable ‘numar’ [-Wunused-variable] int nr_linii, nr_chei, nr_carac, nr_cuv, nr_elem, numar, i; ^ user.c:149:46: warning: unused variable ‘nr_elem’ [-Wunused-variable] int nr_linii, nr_chei, nr_carac, nr_cuv, nr_elem, numar, i; ^ user.c:149:38: warning: unused variable ‘nr_cuv’ [-Wunused-variable] int nr_linii, nr_chei, nr_carac, nr_cuv, nr_elem, numar, i; ^ user.c: In function ‘introducere_chei’: user.c:61:10: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(str,100,input); ^