#include <stdio.h>
int add_num(int, int, int); //function declaration
int add_num(int num1, int num2, int num3) //function definition
{
int num4;
num4 = num1 + num2 + num3; //function body
return num4;
}
int main()
{
int i,x,y,z;
printf(“Enter three numbers:\n”);
scanf(“%d%d%d”,&x,&y,&z );
i = add_num(x,y,z);
printf(“sum of %d , %d and %d is %d:\n”,x,y,z,i
);
}
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