C-program (If Statement Programs)

Home


Program No : 2.1 : write a program in C to check whether the given number even or odd
#include

int main()

{
int number;

scanf("%d", &number);

if ( number % 2 ==1)
printf("odd");
else
printf("even");

}
Pointer:
#include
#include

int main()

{
int number, *pnum ;

pnum=&number;

scanf("%d", pnum); //scanf("%d", &number); both are same.

if ( *pnum % 2 ==1)
printf("odd");
else
printf("even");

getch();
}
Program No : 2.2 : write a program in C to check whether the given number positive, negative or zero.
#include

int main()

{
int number;

scanf("%d", &number);

if ( number >0)

printf("postive");
else
{
if (number<0)

printf("negative");
else

printf("zero");
}

}
Pointer:
#include
#include

int main()

{
int number, *pnum ;
pnum=&number;
scanf("%d", pnum); //scanf("%d", &number); both are same.
if (*pnum >0)
printf("postive");
else
if (*pnum<0)
printf("negative");
else
printf("zero");

getch();
}
Program No : 2.3 : write a program in C to check whether the given year is leap or not
#include

int main()

{
int year;

scanf("%d", &year);

if ( year % 4 ==0)
printf("leap year");
else
printf("not a leap");

}
Pointer:
#include
#include

int main()

{
int year, *pl ;

pl=&year;

scanf("%d", pl); //scanf("%d", &number); both are same.

if ( *pl % 4 ==0)
printf("leap");
else
printf("Not a leap");

getch();
}
Program No : 2.4 : Write a program in C to check whether the given character upper, lower , number or not
#include

int main()

{
char any;

scanf("%c", &any);

if(any>='A' && any <='Z')
printf("upper case");
else
if(any>='a' && any <='z')
printf("lower case");
else
if(any>='0' && any <='9')
printf("number");
else
printf("not ");

}
Pointer:
#include
#include
int main()

{
char any, *pany;

pany=&any;

scanf("%c", pany);

if(*pany>='A' && *pany <='Z')
printf("upper case");
else
if(*pany>='a' && *pany <='z')
printf("lower case");
else
if(*pany>='0' && *pany <='9')
printf("number");
else
printf("not ");

getch();
}
Program No : 2.5 : Write a program in C to change upper to lower
#include

int main()

{
char any;

scanf("%c", &any);

if(any>='A' && any <='Z')
printf("%c",any+32);
else

printf("%c",any);

}
Pointer:
#include
#include
int main()

{
char any, *pany;

pany=&any;

scanf("%c", pany);

if(*pany>='A' && *pany <='Z')
printf("%c",*pany+32);
else

printf("%c",*pany);

getch();
}
Program No : 2.6 : Write a program in C to change lower to upper
#include

int main()

{
char any;

scanf("%c", &any);

if(any>='a' && any <='z')
printf("%c",any-32);
else

printf("%c",any);

}
Pointer:
#include
#include
int main()

{
char any, *pany;

pany=&any;

scanf("%c", pany);

if(*pany>='a' && *pany <='z')
printf("%c",*pany-32);
else

printf("%c",*pany);

getch();
}
Program No : 2.7 : Write a program in C to print a word form of given number between 0 to 9
#include
int main()
{
int number;
scanf("%d", &number);
if ( number==0)
printf("Zero");
else
if ( number==1)
printf("One");
else
if ( number==2)
printf("Two");
else
if ( number==3)
printf("Three");
else
if ( number==4)
printf("Four");
else
if ( number==5)
printf("Five");
else
if ( number==6)
printf("Six");
else
if ( number==7)
printf("Seven");
else
if ( number==8)
printf("eight");
else
if( number==9)
printf("Nine");
else
printf("others");

}
Pointer:
#include
#include
int main()
{
int number,*pnum;
pnum=&number;
scanf("%d", pnum);
if (*pnum==0)
printf("Zero");
else
if (*pnum==1)
printf("One");
else
if (*pnum==2)
printf("Two");
else
if (*pnum==3)
printf("Three");
else
if (*pnum==4)
printf("Four");
else
if (*pnum==5)
printf("Five");
else
if (*pnum==6)
printf("Six");
else
if (*pnum==7)
printf("Seven");
else
if (*pnum==8)
printf("eight");
else
if(*pnum==9)
printf("Nine");
else
printf("others");
getch();
}