4. Show the output of the following program as it would appear on the screen. 20

Question

4. Show the output of the following program as it would appear on the screen. 20 points) R program written by A. Bright Student #include stdio.h int M 15; int N 20; int main(void) void Louie( int, int); int a,b; a 10; b 35; prin ("%s %d %dln"," In Main", a,b); Louie(a,b); print ("Back from Louie %d %dln",a, b); printf(" values %3d,%3d, areln", M,N); return 0; void Louie( int V, int W) int total; printf" In Louieln"); total V+ W; print ("%dln", V; printf( "%dln", W; M 412; total) print total is now %3dln",

Explanation / Answer

Ans a) a and b variables are LOCAL to main. becuase they are declared and defined in the main function only and they have limited scope.

ans b) M and N variables are GLOBAL to main. because they are declared outside the main function. they have scope limited to that file. so they are accessible by any function.

ans c) X a is an input parameter, b is an input value parameter.

because, a and b parameters are local and getting passed into Louie function. then those values will be copied into variables V and W.

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