I need someone to convert this into C C code for partII incl

I need someone to convert this into C

C++ code for part-II

#include<iostream.h>
void computeProperties(float radius,float height,float *area,float *volume);
int main()
{
   float radius,height,area,volume;
   while(1) // continue loop until correct value is input
       {
       cout<<endl<<\"Enter radius of the base of the cylinder : \";
       cin>>radius;
       if(radius>0) break;
       cout<<endl<<\"wrong radius entered!try again\";
       }
   while(1) // continue loop until correct value is input
       {
       cout<<endl<<\"Enter height of the cylinder : \";
       cin>>height;
       if(radius>0) break;
       cout<<endl<<\"wrong heigh entered!try again\";
       }
   // call following function with address of area and address of volume
   // variable so that chanhe in called function will affect in main().
   computeProperties(radius,height,&area,&volume);
   cout.precision(4);
   cout.fill(\'0\');
   cout<<endl<<\"Cylinder properties: Radius = \"<<radius<<\" height = \"<<height<<\" area = \"<<area<<\" volume = \"<<volume;
   return 0;
}
// This function computes area nad volume of cylinder
void computeProperties(float radius,float height,float *area,float *volume)
   {
   *area=(3.1428* radius * height)*2+(3.1428 * radius * radius*2);
   *volume=3.1428*(radius*radius)*height;
   }

______________________________________________________

Part-III

// Program for part-III
#include<iostream.h>
#include<fstream.h>
#include<conio.h>
#include<stdlib.h>
//function prototypes
void readInputFile();
void computValues(float num1,float num2,float *sum,float *dif);
//void computeProperties(float radius,float height,float *area,float *volume);
int main()
   {
   clrscr();
   readInputFile(); // call to readInputFile()
   return 0;
   }
void readInputFile()
   {
   float num1,num2,sum,dif;
   int n;
   ifstream f;
   f.open(\"input.txt\"); // open the file input.txt
   if(f.fail())
       {
       cout<<endl<<\"Unable to ipen file!\";
       exit(0);
       }
   f>>n;
   for(int i=1;i<=n;i++) // loops for n times , n is the first line in file
       {
       f>>num1; //read 1st number
       f>>num2; //read 2nd number
       // call following function with address of sum and address of dif
       //so that change in called function will affect in this function().
       computValues(num1,num2,&sum,&dif);
       cout.precision(4);
       cout<<endl<<\"NUM: \"<<num1<<\" NUM: \"<<num2<<\" SUM: \"<<sum<<\" DIFF: \"<<dif;
       }
   f.close();
   }
// computeValues() to compute sum and difference
void computValues(float num1,float num2,float *sum,float *dif)
   {
   *sum=num1+num2; // compute sum
   *dif=num1-num2; // compute diffrence
   }

//Part-II C code
#include <stdio.h>

void computeProperties(float radius,float height,float *area,float *volume);

int main()
{
float radius,height,area,volume;
while(1) // continue loop until correct value is input
{
printf(\"\ Enter radius of the base of the cylinder : \");
scanf(\"%f\",&radius);
if(radius>0) break;
printf(\"\ wrong radius entered!try again\");
}
while(1) // continue loop until correct value is input
{
printf(\"\ Enter height of the cylinder : \");
scanf(\"%f\",&height);
if(radius>0) break;
printf(\"\ wrong heigh entered!try again\");
}
// call following function with address of area and address of volume
// variable so that chanhe in called function will affect in main().
computeProperties(radius,height,&area,&volume);

printf(\"\ Cylinder properties: Radius = %0.4f height = %0.4f area = %0.4f volume = %0.4f\ \", radius,height,area,volume);

return 0;
}
// This function computes area nad volume of cylinder
void computeProperties(float radius,float height,float *area,float *volume)
{
*area=(3.1428* radius * height)*2+(3.1428 * radius * radius*2);
*volume=3.1428*(radius*radius)*height;
}

/*
output:
Enter radius of the base of the cylinder : 3.4

Enter height of the cylinder : 1.3

Cylinder properties: Radius = 3.4000 height = 1.3000 area = 100.4439 volume = 47.2300

//Part-III C code
#include <stdio.h>
#include <stdlib.h>

//function prototypes
void readInputFile();
void computValues(float num1,float num2,float *sum,float *dif);

int main()
{
readInputFile(); // call to readInputFile()
return 0;
}

void readInputFile()
{
float num1,num2,sum,dif;
int n,i;
FILE *f;
if ((f = fopen(\"input.txt\", \"r\")) == NULL)
{
printf(\"\ Unable to ipen file!\");
// Program exits if file pointer returns NULL.
exit(1);
}

fscanf(f,\"%d\", &n);
for(i=1;i<=n;i++) // loops for n times , n is the first line in file
{
fscanf(f,\"%f\", &num1); //read 1st number
fscanf(f,\"%f\", &num2); //read 2nd number
// call following function with address of sum and address of dif
//so that change in called function will affect in this function().
computValues(num1,num2,&sum,&dif);

printf(\"\ NUM: %0.4f NUM: %0.4f SUM: %0.4f DIFF: %0.4f\ \",num1,num2,sum,dif);
}
fclose(f);
}

// computeValues() to compute sum and difference
void computValues(float num1,float num2,float *sum,float *dif)
{
*sum=num1+num2; // compute sum
*dif=num1-num2; // compute diffrence
}

input.txt:
5
1
2
3
4
5
6
7
8
9
10

output:
NUM: 1.0000 NUM: 2.0000 SUM: 3.0000 DIFF: -1.0000

NUM: 3.0000 NUM: 4.0000 SUM: 7.0000 DIFF: -1.0000

NUM: 5.0000 NUM: 6.0000 SUM: 11.0000 DIFF: -1.0000

NUM: 7.0000 NUM: 8.0000 SUM: 15.0000 DIFF: -1.0000

NUM: 9.0000 NUM: 10.0000 SUM: 19.0000 DIFF: -1.0000