Special C Programs

 Dear learners,

Following is the list of special C programs. These are programs where some special function or logic is used.

Observe the following interesting C program.

Printing formatted output using ASCII value. #include<stdio.h> int main() {   int i;   for(i=0; i<10; i++)             printf("%c",174);   printf(" HELLO STUDENTS ");   for(i=0; i<10; i++)             printf("%c",175);               printf("\n\n");               for(i=0; i<10; i++)             printf("%c",176);   printf(" HELLO STUDENTS ");   for(i=0; i<10; i++)             printf("%c",176);               printf("\n\n");               for(i=0; i<10; i++)             printf("%c",257);   printf(" HELLO STUDENTS ");   for(i=0; i<10; i++)             printf("%c",258);   return 0;           } Output of the Program:

C program to print memory occupied by int, float and char variables. #include<stdio.h> int main() {   int i;   float f;   char ch;   printf("Size of int variable: %d \n",sizeof(i));   printf("Size of float variable: %d \n",sizeof(f));   printf("Size of char variable: %d \n",sizeof(ch));   return 0; } Output of the Program: Size of int variable: 4 Size of float variable: 4 Size of char variable: 1 Note: Output of the program may be different on your computer...

C program to use Arrow keys. #include<stdio.h> int   main()  {   int chr1, chr2;   printf("Press any arrow key...\n");   chr1 = getch();   if (chr1 == 0xE0) //to check scroll key interrupt  {    chr2 = getch();  //to read arrow key   switch(chr2)    {     case 72: printf("UP ARROW KEY PRESSED\n");              break;     case 80: printf("DOWN ARROW KEY PRESSED\n");              break;     case 75: printf("LEFT ARROW KEY PRESSED\n");              break;     case 77: printf("RIGHT ARROW KEY PRESSED\n");              break;    default: printf("OTHER KEY PRESSED: %d %d\n", chr1, chr2);                break;    };   }   return 0; } Output of the Program: Press any arrow key... UP ARROW KEY PRESSED