Consider the following function that is intended to swap the values of two integers:void false_swap1(int& a, int& b){ a = b; b = a;}int main(){ int x = 3; int y = 4; false_swap1(x, y); cout << x << " " << y << endl; return 0;}Why doesnt the function swap the contents of x and y? How can you rewrite thefunction to work cor rectly?
last resort, use else statement. Cannot put anything after the “else” expression or it won’t read it only “if” and “end” are needed the “elseif” and and “else” are not NEEDED >> %Day 7 MATLAB examples >> a=10;b=15;c=20; >> x=a> y=a>c||b> %one means yes, zero means no >> z=a>c&&b> %these are 3 logical operators >> v=x&y v = 1 >> %if x is true and y is true, you should get a true for v as well >> %string compare syntax is "strcmp('Yes','No') >> %ex. s1='upon';s2={'Once','Upon','A','Time'};tf=strcmp(s1,s2) >> s1='upon';s2={'Once','Upon','A','Time'};tf=strcmp(s1,s2) tf = 0 0 0 0 >> %It's comparing each thing and saying yes this is true (1) or no this is false (0) >> %example below >> strcmp('Test','test') ans = 0 >> %the above just asked MATLAB if capitalized test is different than lowercase test and it gave false because that is not true >> %examples with ifelse statements there are 2 inputs we can use in our script: a string or a number if you put: strcmp(‘trig,’sine’) it compares your input named ‘trig’ to the sine function, and if you input sine, it will execute the command In class exercise: Answer: trig=input('Enter a trig function,'s;%be sure to include the string indicator x=[0:pi/2:2*pi];%X values for the plot i strcmp(trig,'sine)%will run if sine is entered y=sin(x)%creates the y values for the plot plot(x,y%plots the
