CstructProduct, C (gcc)

CstructProduct

//gcc 7.4.0

//CstructProduct: get 3 product items from user, print them, sort them and print the sorted items 
//code is created by Rezaul Hoque on May 24,2021
//please contact at jewelmrh@yahoo.com
//note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their  learning;

//Instead of sorting algorithm, simple string comparison is used to sort the items; strcmp compares two  strings and is 0 if they are equal or  it is the difference between the first unmatched characters; if the difference is negative then the first string is above in order (more close to A)than the second string;

#include <stdio.h>
#include <string.h>
struct store{
char name[20];
 char number[20];
char price[20];
};
int main()
{
struct store product[3];
char  temp[20];
int i=0, j=0;
printf("Enter input:\n");
for (i=0;i<3;i++)
scanf("%s  %s  %s",product[i].name, product[i].number, product[i].price);
printf("\nInput:\n");

for (i=0;i<3;i++)
{
printf("%5s  %5s   %5s\n", product[i].name, product[i].number, product[i].price);
 }

for(i=1;i<=3;i++)

for(j=1;j<=3-i;j++)

if(strcmp(product[j-1].name, product[j].name)>0)//as long as the first string has higher ASCII code (far away from A) , then first swap names, then numbers and finally prices

{//swap names 
strcpy(temp,product[j-1].name);
  strcpy(product[j-1].name,product[j].name);
strcpy(product[j].name, temp);

//swap numbers 
    strcpy(temp,product[j-1].number);
  
  strcpy(product[j-1].number,product[j].number);
strcpy(product[j].number, temp);

//swap prices 
strcpy(temp,product[j-1].price);
  strcpy(product[j-1].price,product[j].price);
strcpy(product[j].price, temp);
    
    
  }

printf("\nOutput:\n");
for (i=0;i<3;i++)
{
printf("%5s  %5s   %5s\n", product[i].name, product[i].number, product[i].price);
 }
//to convert string numbers into integers use atoi(string number)
int y[3];
int sum=0;
for(i=0;i<3;i++){
y[i]= atoi(product[i].price);//converting string numbers into integers and storing them into y
sum += y[i];
}
printf("\n3 products cost Tk  %d",sum);

return 0;
}


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