c - compare 2 inputs from keyboard with strcmp leads to segmentation fault -

i new student in c language , come this. code:

#include <stdio.h> #include <string.h>  int main(void) {    char str[80];     printf("enter sth: ");    char st1 = gets(str);     printf("enter sth: ");    char st2 = gets(str);     if(strcpy(st1,st2))      printf("same\n");    else       printf("different\n");    return 0; } 

my goal check if 2 strings enter keyboard same. compile , warnings:

hello.c: in function ‘main’: hello.c:9:16: warning: initialization makes integer pointer without cast [enabled default]

hello.c:12:16: warning: initialization makes integer pointer without cast [enabled default]

hello.c:14:5: warning: passing argument 1 of ‘strcpy’ makes pointer integer without cast [enabled default]

/usr/include/string.h:128:14: note: expected ‘char * restrict’ argument of type ‘char’

hello.c:14:5: warning: passing argument 2 of ‘strcpy’ makes pointer integer without cast [enabled default]

/usr/include/string.h:128:14: note: expected ‘const char * restrict’ argument of type ‘char’

enter sth: asd
enter sth: asd
output: segmentation fault (core dumped)

segmentation fault saw error when want access sth doesnt exist!

i search little here in stackoverflow similar questions , here dont understand why code isnt working. thank you!

you treating address of char variable string , using strcpy instead of strcmp. this:

char st1 = gets(str); char st2 = gets(str); if(strcpy(st1,st2)) 

was meant be:

char st1[255], st2[255]; scanf("%254s", st1); scanf("%254s", st2); if(strcmp(st1, st2) == 0)