int main() {
int *p,i,j,n,sum=0,avg=0,temp;
printf(“Enter the number of elements to store:\n”);
scanf(“%d”,&n);
printf("Enter the elements to store:\n");
p=(int*)malloc(n*sizeof(int));
for(i=0;i<n;i++){
scanf("%d",(p+i));
}
for(i=0,j=n-1;i<n/2;i++,j--){
temp=*(p+i);
*(p+i)=*(p+j);
*(p+j)=temp;
}
for(i=0;i<n;i++){
printf("%d ",*(p+i));
}
printf("\n");
return 0;}
// program to count the even and odd numbers in an integer
void new(int *a, int *even, int *odd);
int main()
{
int a, b, n, even=0, odd=0;
int arr[50];
printf(“Enter the limit :\n”);
scanf("%d",&n);
printf("Enter the array elements :\n");
for (int i =0 ; i<n; i++){
scanf("%d", &arr[i]);
new(&arr[i], &even, &odd);
}
printf("********______ *********** \n\n");
printf(" EVEN COUNT : %d\n ",even);
printf("ODD COUNT : %d\n\n\n ",odd);
printf("********______ *********** \n\n");
return 0;}
void new(int *a, int *even, int *odd){
if(*a % 2==0){
(*even)++;
}
else{
(*odd)++;
}}
// program for swap two number uwithout using 3rd variable
void new(int *a, int *b);
int main()
{
int a,b;
printf(“Enter number 1: \n”);
scanf(“%d”,&a);
printf(“Enter number 2: \n”);
scanf(“%d”,&b);
printf("ORIGINAL Value of a : %d\n ",a);
printf("ORIGINAL Value of b : %d\n ",b);
new(&a, &b);
printf("******** SWAPPED VALUES *********** ");
printf("New Value of a : %d\n ",a);
printf("New Value of b : %d\n ",b);
return 0;}
void new(int *a, int *b ){
// a=a^*b;
// *b=a^b;
// a=a^*b;
*a=*a+*b-(*b=*a);
return ;}
// program for call by reference verification
void new(int *n);
int main()
{
int n,a;
printf(“Enter a number : \n”);
scanf(“%d”,&n);
printf(“The entered number is : %d\n “,n);
new(&n);
printf("CHECKING THE VALUE of n : %d",n);
return 0;}
void new(int *n){
*n=n+5; printf(“The new value of [ a ] is : %d \n”,n);
return ;
}
// program for call by value verification
void new(int);
int main()
{
int n,a;
printf(“Enter a number : \n”);
scanf(“%d”,&n);
printf(“The entered number is : %d\n “,n);
new(n);
printf("CHECKING THE VALUE of n : %d\n\n",n);
return 0;}
void new(int n){
n=n+5;
printf(“The new value of [ a ] is : %d \n”,n);
return ;
}
int main(){
int i,j,r,c,f=0;
printf(“Enter the no of rows and columns:\n”);
scanf(“%d%d”,&r,&c);
int m[r][c];
printf("Enter the elments of matrix:\n");
for(i=0;i<r;i++){
for(j=0;j<c;j++){
scanf("%d",&m[i][j]);
}
}
for(i=0;i<r;i++){
for(j=0;j<c;j++){
if(i<j && m[i][j]!=0){
f=1;
break;
}
}
}if(f==0){
printf(“Lower Triangular\n”);
}
else{
printf("Not a Triangular martix");}
return 0;
}
int main(){
int i,j,r,c,f=0;
printf(“Enter the no of rows and columns:\n”);
scanf(“%d%d”,&r,&c);
int m[r][c];
printf("Enter the elments of matrix:\n");
for(i=0;i<r;i++){
for(j=0;j<c;j++){
scanf("%d",&m[i][j]);
}
}
for(i=0;i<r;i++){
for(j=0;j<c;j++){
if(i>j && m[i][j]!=0){
f=1;
break;
}
}
}if(f==0){
printf(“Upper Triangular\n”);
}
else{
printf("Not a Upper Triangular martix");}
return 0;
}
int main(){
int i,j,r,c;
printf(“Enter the no of rows and columns:\n”);
scanf(“%d%d”,&r,&c);
int m[r][c];
printf("Enter the elments of matrix:\n");
for(i=0;i<r;i++){
for(j=0;j<c;j++){
scanf("%d",&m[i][j]);
}
}
int large=m[0][0];
int small=m[0][0];
for(i=0;i<r;i++){
for(j=0;j<c;j++){
if(m[i][j]>large){
large=m[i][j];
}
if(m[i][j]<small){
small=m[i][j];
}
}
}
printf("Large : %d\n Small : %d\n",large,small);
return 0;}
int main()
{
int i,j,r,c,small,large;
printf("Enter number of rows and coloumns\n");
scanf("%d%d", &r, &c);
int m1[r][c];
printf("Enter the elements of matrix :\n");
for(i=0; i<r; i++) {
for(j=0; j<c; j++) {
scanf("%d",&m1[i][j]);
}
}
printf("Entered matrices is: \n\n");
for(i=0; i<r; i++) {
for(j=0; j<c;j++) {
printf("%d ",m1[i][j]);
}
printf("\n");
}//LOGIC PART – Small nikalne ka
small=m1[0][0];
for(i=0; i<r; i++) {
for(j=1; j<c;j++) {
if(m1[i][j]<small){
small=m1[i][j];
}
//small kon si memory address hai pata kiya
for(j=0; j<c;j++) {
if(m1[i][j]==small){
break;
}
}
//LOGIC PART - jo small wala column hai kya usme wo largest hai ( in that column )
large=small;
for(i=1; i<r; i++) {
if(large<m1[i][j]){
large=m1[i][j];
}
}
if (large==small){
printf("%d is the saddle point in a matrix",small);
}
}
}
return 0;}
#include <stdio.h>
int main()
{
int i,j,r,c,sum;
printf(“Enter number of rows and coloumns\n”);
scanf(“%d%d”, &r, &c);
int m1[r][c];
printf(“Enter the elements of matrix :\n”);
for(i=0; i<r; i++) {
for(j=0; j<c; j++) {
scanf(“%d”,&m1[i][j]);
}
}
printf(“Entered matrices is: \n\n”);
for(i=0; i<r; i++) {
for(j=0; j<c;j++) {
printf(“%d “,m1[i][j]);
}
printf(“\n”);
}
//LOGIC PART
sum=0;
for(i=0; i<r; i++) {
for(j=0; j<c;j++) {
if(i==j){
sum += m1[i][j];
}
}
}
printf(“The sum of Principal diagonal is : %d\n”,sum);
sum=0;
for(i=0; i<r; i++) {
for(j=0; j<c;j++) {
if(i+j==r-1){
sum += m1[i][j];
}
}
}
printf(“The sum of Secondary diagonal is : %d\n”,sum);
return 0;
}