C functions in finding a max value [closed] - c

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How to write a C Function that takes three integers as arguments and returns the value of the largest one.
int largest(int x,int y,int z)
{
int val1,val2,val3;
int maximum;
printf("enter value \n");
scanf("%d",&val1,&val2,&val3);
maximum=largest(val1,val2,val3);
printf("the largest integer is %d = \n",maximum);
return 0;
}
int largest(int x,int y,int z)
{
if(x>=y && x>=z)
printf("Largest number = %d", x);
if(y>=x && y>=z)
printf("Largest number = %d", y);
if(z>=x && z>=y)
printf("Largest number = %d", z);
}
I have tried this codes but they don't work i need help please I am also a beginner at this

Answer 1

This should work fine.
int val1,val2,val3;
int maximum;
printf("enter value \n");
scanf("%d %d %d",&val1,&val2,&val3);
maximum=largest(val1,val2,val3);
printf("the largest integer is %d = \n",maximum);
return 0;
}
int largest(int x,int y,int z){
int max;
max=x;
if(y>max){
max=y;
}
if(z>max){
max=z;
}
return max;
}

Answer 2

Try this one:
#include <stdio.h>
int largest(int x, int y, int z);
int main() {
int val1, val2, val3;
int maximum;
printf("enter value \n");
scanf("%d", &val1, &val2, &val3);
maximum = largest(val1, val2, val3);
printf("the largest integer is %d = \n", maximum);
return 0;
}
int largest(int x, int y, int z){
if (x >= y && x >= z)
return x;
if (y >= x && y >= z)
return y;
// otherwise
return z;
}
The problem is that you wanted the method to return the largest value, but simply didnt do that - the code is not compiling because the largest function is defined to "return" an int but there's no return statement anywhere in your function.
If you dont know what exactly "returning function" is then take a look at this tutorial: http://www.cplusplus.com/doc/tutorial/functions/

Answer 3

This is a pretty short way of doing what you want:
int largest(int a, int b, int c)
{
a = (a > b) ? a : b;
a = (a > c) ? a : c;
return a;
}

Answer 4

To return a value you must use a return statement in function.
Let us inspect what you've done,
#include<stdio.h>
int largest(int x,int y,int z)/* missed ';' */
/* missed 'void main()' */
{
int val1,val2,val3;
int maximum;
printf("enter value \n");
scanf("%d",&val1,&val2,&val3); /* missed format specifier for other two values */
maximum=largest(val1,val2,val3);
printf("the largest integer is %d = \n",maximum);
return 0;
}
int largest(int x,int y,int z)
{
if(x>=y && x>=z)
printf("Largest number = %d", x);/* written print statement instead of return statement */
if(y>=x && y>=z)
printf("Largest number = %d", y);/* written print statement instead of return statement */
if(z>=x && z>=y)
printf("Largest number = %d", z);/* written print statement instead of return statement */
}
After modification the code should be like this,
#include<stdio.h>
int largest(int x,int y,int z);
int main()
{
int val1,val2,val3;
int maximum;
printf("enter value \n");
scanf("%d %d %d",&val1,&val2,&val3);
maximum=largest(val1,val2,val3);
printf("the largest integer is %d \n",maximum);
return 0;
}
int largest(int x,int y,int z)
{
if(x>=y && x>=z)
return x;
if(y>=x && y>=z)
return y;
if(z>=x && z>=y)
return z;
}