Given three pieces of C++ code, run and observe output (note: write a main() as test...

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Given three pieces of C++ code, run and observe output (note: write a main() as test driver in order to run; you don't have to turn in your program for this homework, just observe the results) then answer the questions below. (1) void swap (int x, int y) { int t = x; x = y; y = t; return; } int a = 10, b = 20; swap(a,b); //now print a and b (3) void swap (int& x, int& y) { int t = x; X = Y; y = t; return; (2) void swap (int *px, int *py) { int t = *px; } int a = 10, b = 20; swap(a,b); //now print a and b *px = *py; *py = t; return; } int a = 10, b = 20; swap (&a,&b); //print a and b Question (a): what is the parameter passing method implemented/supported by the language for each of the above code? Question (b): Run the code and observe the results. Which code(s) swap two values? Which code(s) don't? Why - briefly explain. Given three pieces of C++ code, run and observe output (note: write a main() as test driver in order to run; you don't have to turn in your program for this homework, just observe the results) then answer the questions below. (1) void swap (int x, int y) { int t = x; x = y; y = t; return; } int a = 10, b = 20; swap(a,b); //now print a and b (3) void swap (int& x, int& y) { int t = x; X = Y; y = t; return; (2) void swap (int *px, int *py) { int t = *px; } int a = 10, b = 20; swap(a,b); //now print a and b *px = *py; *py = t; return; } int a = 10, b = 20; swap (&a,&b); //print a and b Question (a): what is the parameter passing method implemented/supported by the language for each of the above code? Question (b): Run the code and observe the results. Which code(s) swap two values? Which code(s) don't? Why - briefly explain.

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a The parameter passing method implementedsupported by the language for each of the above code snippets are as follows 1 Passbyvalue The function swap ... View the full answer