Programming In C, 3rd Edition

384 Programming in C

We can also declare the same variable names for actual and formal arguments. The compiler

will not get confused due to same variable names. The scope of every auto variable is local

to the block in which they are defined.

(ii) Global variables: Global variables are defined outside the main() function. Multiple func-

tions can use them. The example is illustrated below for understanding.

10.4 Write a program to show the effect of global variables on different functions.

void fun(void);

int b=10,c=5;

void main()

{

clrscr();

printf(“\nIn main() B=%d C=%d”,b,c);

fun();

b++;

c--;

printf(“\n Again In main() B=%d C=%d”,b,c); ...