prog.c:2:2: error: invalid preprocessing directive #iclude
#iclude<stdio.h>
^~~~~~
prog.c: In function ‘main’:
prog.c:6:2: warning: implicit declaration of function ‘strcpy’ [-Wimplicit-function-declaration]
strcpy(a,b);
^~~~~~
prog.c:6:2: warning: incompatible implicit declaration of built-in function ‘strcpy’
prog.c:6:2: note: include ‘<string.h>’ or provide a declaration of ‘strcpy’
prog.c:7:2: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration]
printf("%s%s",a,b);
^~~~~~
prog.c:7:2: warning: incompatible implicit declaration of built-in function ‘printf’
prog.c:7:2: note: include ‘<stdio.h>’ or provide a declaration of ‘printf’