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Write a programme in C to find the union and intersection of two sets?

#include<stdio.h> #include<conio.h> void Union(int set1[10],int set2[10],int m,int n); void Intersection(int set1[10],int set2[10],int m,int n); void main() { { int a[10],b[10],m,n,i,j; int ch; clrscr(); printf("\nEnter the no of elements in first set:"); scanf("%d",&m); printf("\nEnter the elements:"); for(i=0;i<m;i++) { scanf("%d",&a[i]); } printf("\nElement of First set:\n"); for(i=0;i<m;i++) { printf("\t%d",a[i]); } printf("\nEnter the no of elements in second set:"); scanf("%d",&n); printf("\nEnter the elements:"); for(i=0;i<n;i++) { scanf("%d",&b[i]); } printf("\nElement of second set\n"); for(i=0;i<n;i++) { printf("\t%d",b[i]); } while(1) { printf("\n\tMenu\n\n1.Union\n2.Intersection"); printf("\n3.exit"); printf("\nenter your choice:-"); scanf("%d",&ch); switch(ch) case 1: union(a,b,m,n); break; case 2: intersection(a,b,m,n); break; case 3: exit(0); } getch(); } } void union(int a[10],int b[10],int m,int n) { int c[20],i,j,k=0,flag=0; for(i=0;i<m;i++) { c[k]=a[i]; k++; } for(i=0;i<n;i++) { flag=0; for(j=0;j<m;j++) { if(b[i]==c[j]) { flag=1; break; } } if(flag==0) { c[k]=b[i]; k++; } } printf("\nElement of resultant set\n"); for(i=0;i<k;i++) { printf("\t%d",c[i]); } } void intersection(int a[10],int b[10],int m,int n) { int c[20],i,j,k=0,flag=0; for(i=0;i<m;i++) { flag=0; for(j=0;j<n;j++) { if(a[i]==b[j]) { flag=1; break; } } if(flag==1) { c[k]=a[i]; k++; } } printf("\nElement of resultant set\n"); for(i=0;i<k;i++) { printf("\t%d",c[i]); } }