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 Program:- #include <stdio.h> #include <conio.h> void main() { int l, b; void arearectangle( int , int ); void perimeterrectangle( int , int ); printf( "Enter two values \n" ); scanf( "%d %d" ,&l, &b); arearectangle(l,b); perimeterrectangle(l,b); getch(); } void arearectangle( int l, int b) {   int area;   area=l*b;   printf( "%d is area \n " ,area);   return area; } void perimeterrectangle( int l, int b) {   int perimeter ;   perimeter=2*(l+b);   printf( "%d is perimeter \n" ,perimeter);   return perimeter ; }

Program:- #include<stdio.h> void main() {  int a[10],size,num,i,loc;  printf("Operation on 1D array-Delete\n");  printf("Enter size of array \n");  scanf("%d",&size);  printf("Enter elements \n");  for (i=1;i<=size;i++)  {   scanf("%d",&a[i]);  }   printf("Enter location of no. to be deleted \n");   scanf("%d",&loc);  for (i=loc;i<=size-1;i++) {  a[i]=a[i+1]; }  printf("Array element \n");  for(i=1;i<=size-1;i++) {  printf("%d \t",a[i]); } }