C using swap, array pro

Swap Numbers                     

#include

#include

void main ()

{

int b,r,n,r1,r2;

clrscr ();

printf ("Enter the Value: ");

scanf ("%d",&n);

r=n%10;

n=n/10;

r1=n%10;

n=n/10;

r2=n%10;

n=n/10;

b=(r*100)*(r2*10)+(r2);

printf ("%d%d%d",r,r1,r2);

getch ();

}

Sum of array

#include

#include

void main ()

{

int no[5],i,sum;

clrscr ();

for (i=0;i<=4;i++)

{

printf ("Enter Element: ");

scanf ("%d",&no[i]);

}

sum=no[0]+no[1]+no[2]+no[3]+no[4];

printf ("\nSum of five Elements: %d",sum);

getch ();

}

Sum, Sub, Product, Division

#include

#include

void main ()

{

int a,b,c,d,e,f;

clrscr();

printf ("Enter A: ");

scanf ("%d",&a);

printf ("Enter B: ");

scanf ("%d",&b);

c=a+b;

d=a-b;

e=a*b;

f=a/b;

printf ("\nSum is : %d",c);

printf ("\nSubtraction is : %d",d);

printf ("\nMultiplication is : %d",e);

printf ("\nDivision is : %d",f);

getch ();

}

Wap to reverse words

#include
#include
#include
const int opt = 50;
int main(){
int i=0,j=0,c=0,vali[opt] = {0};
char str1[opt],str2[opt]="",str3[opt]="",ch;
printf("please enter your sentence :");
gets(str1);
for(i=0;str1[i] != '\0';i++)

{
if(str1[i] == ' ')

{
vali[j+1] = i;
j++;
}
}
c = j;
for(i=0;i<=j && c!=0;i++)

{
strcat(str2,&str1[vali[c]+1]);
strcpy(&str1[vali[c]],str3);
strcat(str2," ");
c--;
}
strcat(str2,str1);
printf("\nyour reversed sentence is :");
puts(str2);
getch();
return 0;
}