How garbage values are assigned to variables in c

Question

C code :

int a;
printf(\"\\n\\t %d\",a); // It\'ll print some garbage value;

So how does these garbage values are assigne

Answer 1

int a;

While declaring a variable, the memory is allocated. But this variable is not assigned which means the variable a is not initialized. If this variable a is only declared but no longer used in the program is called garbage value. For example:

int a, b;

b=10;
printf("%d",b);
return 0;

Here it's only declared but no longer assigned or initialized. So this is called garbage value.