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POFunction: variable substitute
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copied!<p>I'am having some trouble with the code below; I know it's rudimentary stuff for you more experienced coders, but this is my first time trying to code something in C so please bear with me. </p> <pre><code>#include <stdio.h> int main() { printf("This program, or function, substitutes one given number for another given number, and then places the former with the latter number. "); float y1 = 10; /* Assign value to variable 1*/ float y2 = 20; /* Assign value to variable 2*/ float y3 = 30; /* Assign value to variable 3*/ float y4 = 40; /* Assign value to variable 4*/ void sub( float *, float *, float *, float * ); /*declare function prototype*/ printf("\nThe numbers' given values before the aforementioned function: Number 1 = %f , Number 2 = %f\n , Number 3 = &f , Number 4 = %f", y1, y2, y3, y4 ); sub( &y1, &y2, &y3, &y4 ); /*This is where the function, to move the numbers, is called */ printf("\nThe numbers' given values after the aforementioned function: Number 1 = %f , Number 2 = %f\n , Number 3 = &f , Number 4 = %f", y1, y2, y3, y4 ); } void sub(float *z1, float *z2, float *n3, float *n4) { int z; int n; z = *z1; *z1 = *z2; *z2 = z; n = *n3; *n3 = *n4; *n4 = n; } </code></pre> <p>And the output is: </p> <pre><code>This program, or function, substitutes one given number for another given number, and then places the former with the latter number. The numbers' given values before the aforementioned function: Number 1 = 10.000000 , Number 2 = 20.000000 , Number 3 = &f , Number 4 = 30.000000 The numbers' given values after the aforementioned function: Number 1 = 20.000000 , Number 2 = 10.000000 , Number 3 = &f , Number 4 = 40.000000 </code></pre> <p>My question is: how do I change the code so that "number 3" substitutes itself just like the rest of the variables. </p>

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