Error(s):

source_file.c: In function ‘main’:
source_file.c:3:16: error: stray ‘@’ in program
         int var@ = 8;
                ^
source_file.c:4:9: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration]
         printf("%d\n",var@);
         ^
source_file.c:4:9: warning: incompatible implicit declaration of built-in function ‘printf’
source_file.c:4:9: note: include ‘<stdio.h>’ or provide a declaration of ‘printf’
source_file.c:4:26: error: stray ‘@’ in program
         printf("%d\n",var@);
                          ^