Question

Consider the following C program: void fun(void) { int a, b, c; /* definition 1 */ ... while (...) { int b, c, d; /* definition 2 */ ... <------------------ 1 while (...) { int c, d, e; /* definition 3 */ ... <-------------- 2 } ... <------------------ 3 }... <---------------------- 4 } For each of the four marked points in this function, list each visible variable, along with the number of the definition statement that defines it.

Answer 1

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Step-by-step explanation:

1.

void func(void){

int a,b,c; /*definition 1*/

/////* a,b,c for definition 1 are visible */

//// d, e are not visible

while(...){

int b, c, d; /* definition 2*/

////*

a from definition 1 is visible

b, c, d from definition 2 are visible

*/ ///

while(...){

int c, d, e;/* definition 3*/

////*

a from definition 1 is visible

b from definition 2 is visible

c, d, e from definition 3 are visible

*/ ///

}

////*

a from definition 1 is visible

b, c, d from definition 2 are visible

e not visible

*////

}

/////* a,b,c for definition 1 are visible */

///// d, e are not visible

}