prog.c: In function ‘main’:
prog.c:4:2: error: unknown type name ‘ind’
ind c ,d;
^~~
prog.c:5:5: warning: right-hand operand of comma expression has no effect [-Wunused-value]
c=3,4;
^
prog.c:6:5: warning: right-hand operand of comma expression has no effect [-Wunused-value]
d=5,6;
^
prog.c:7:2: warning: implicit declaration of function ‘print’ [-Wimplicit-function-declaration]
print("%d",c+d);
^~~~~