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#include<stdio.h> #include<conio.h> void main() { int num=1342; clrscr(); printf( "%d" ,printf( "%d" ,printf( "%d" ,num))); getch(); } Output : 134241 How ? Firstly Inner printf is executed which results in printing 1324 This Printf Returns total number of Digits i.e 4 and second inner printf will looks like printf( "%d" ,printf( "%d" ,4)); It prints 4 and Returns the total number of digits i.e 1 (4 is single digit number ) printf( "%d" ,1); It prints simply 1 and output will looks like 132441 Rule : Inner printf returns Length of string printed on screen to the outer printf

Make Your Own Header File ? Step1 : Type this Code int Multiplication( int a, int b) { return (a*b); } In this Code write only function definition as you write in General C Program Step 2 : Save Code Save Above Code with [.h ] Extension . Let name of our header file be myhead [Multhead.h ] Compile Code if required. Step 3 : Write Main Program #include<stdio.h> #include "Multhead.h" void main() { int number1=10,number2=10,number3; number3 = Multiplication(number1,number2); printf( "Addition of Two numbers : %d" ,number3); } Include Our New Header File . Instead of writing < Multhead.h> use this terminology “Multhead.h” All the Functions defined in the Multhead.h header file are now ready for use . Directly call function Multiplication(); [ Provide proper parameter and take care of return type ] Note While running your program precaution to be taken : Both files [ Multhead.h and sample.c ] should be in same folder. Technorati Tag...

#include<stdio.h> #include<dos.h> #include<conio.h> #include<stdlib.h> void main() { int count=100; clrscr(); while (count--) { sound(10*random(100)); delay(75); nosound(); textattr(random(16)+ 'a' +BLINK); cprintf( "*" ); } } Technorati Tags: Sound in C Language

#include<stdio.h> #include<conio.h> #include<math.h> int isdatevalid( int month, int day, int year) { if (day <= 0) return 0 ; switch ( month ) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: if (day > 31) return 0 ; else return 1 ; case 4: case 6: case 9: case 11: if (day > 30) return 0 ; else return 1 ; case 2: if ( day > 29 ) return 0 ; if ( day < 29 ) return 1 ; else return 0 ; } return 0 ; } //------------------------------------------------ int fm( int date, int month, int year) { int fmonth,leap; //leap function 1 for leap & 0 for non-leap if ((year%100==0) && (year%400!=0)) leap=0; else if (year%4==0) leap=1; else leap=0; fmonth=3+(2-leap)*((month+2)/(2*month))+(5*month+month/9)/2; //f(m) formula fmonth = fmonth % 7; //bring it in range of 0 to 6 return fmonth; } //---------------------------------------------- int day_of_week( int date, int month, int year) { int ...

An electric power distribution company charges its domestic consumers as follows. Consumption Rate of Units Charge ------------------------------------------------------ 0-200 Rs.0.50 per unit 201-400 Rs.100 plus Rs.0.65 per unit excess 200 401-600 Rs.230 plus Rs.0.80 per unit excess of 400. #include<stdio.h> #include<conio.h> void main() { int n, p; float amount; clrscr(); printf( "Enter the customer number: " ); scanf( "%d" ,&n); printf( "Enter the power consumed: " ); scanf( "%d" ,&p); if (p>=0 && p<=200) amount=p*0.50; else if (p>200 && p<400) amount = 100+((p-200) * 0.65); else if (p>400 && p<=600) amount = 230 + ((p-400) * 0.80); printf( "Amount to be paid by customer no. %d is Rs.:%5.2f." ,n,amount); getch(); } Output : Enter the customer number: 1 Enter the power consumed: 100 Amount to be paid by customer no. 1 is Rs.:50.00. ...

#include<stdio.h> int main(){ int num,rev; printf(" \nEnter a number : "); scanf(" %d ",&num); rev=reverse(num); printf(" \nAfter reverse the no is :%d ",rev); return 0; } int sum=0,r; int reverse( int num){ if (num){ r=num%10; sum=sum*10+r; reverse(num/10); } else return sum; return sum; }

#include<stdio.h> #include<conio.h> void main() { int a[5],i,j=0,big,secondbig; printf(" Enter 5 elements in to the array:); for (i=0;i<=4;i++) scanf(" %d ",&a[i]); big=a[0]; for (i=1;i<5;i++){ if (big<a[i]){ big=a[i]; j = i; } } secondbig=a[5-j-1]; for (i=1;i<5;i++){ if (secondbig <a[i] && j != i) secondbig =a[i]; } printf(" Second biggest Number: %d ", secondbig); return 0; }

#include<stdio.h> #include<conio.h> void main() { int a[50],size,i,big; printf(" \nEnter the size of the array: "); scanf(" %d ",&size); printf(" \nEnter %d elements in to the array: ”, size); for (i=0;i<size;i++) scanf(" %d ",&a[i]); big=a[0]; for (i=1;i<size;i++){ if (big<a[i]) big=a[i]; } printf(" \nBiggest Number: %d ",big); getch(); }

  What is Pointer ? Pointer is a address variable that hold the address of another variable.The * ( indirection or dereference operator), that  gives the contents of an object that pointed to by a pointer. To declare a pointer to a variable: data_type_name * variable name int *ptr; Example 1: void main( ) { int a = 10 ; printf ( " \nAddress of a = %u ", &a ); printf ( " \nValue of a = %d ", a ); } Output: address of a=1565 value of a=10 Example 2: void main() { int a = 5 ; printf ( " \nAddress of a = %u ", &a ); printf ( " \nValue of a = %d ", a ) ; printf ( " \nValue of a = %d ", *( &a ) ); } Output: Address of a = 1444 Value of a = 5 Value of a = 5

  #include <stdio.h> void main() { int q, m, n, temp; printf( "\nEnter values of two numbers: " ); scanf( "%d %d" , &m, &n); if (m == 0) { printf( "\nHCF of number is: %d" , n); goto end; } if (n == 0) { printf( "\nHCF of numbers is: %d" , m); goto end; } if (n > m) { temp = m; m = n; n = temp; } www.

  #include <stdio.h> int hcf( int , int ); void main() { int h, i, a, b; printf( "\nEnter values of two numbers: " ); scanf( "%d %d" , &a, &b); h = hcf(a, b); printf( "\nHCF of numbers is: %d" , h); getch(); } int hcf( int a, int b) { if (a%b == 0) return b; else return hcf(b, a%b); }

  #include <stdio.h> #include < string .h> #include <conio.h> void main() { char str[20]; int i=0, word=0, chr=0; clrscr(); printf( "\nEnter any string: " ); gets(str); while (str[i] != '\0' ) { if (str[i] == ' ' ) { word++; chr++; } else chr++; i++; } printf( "\nNumber of characters: %d" , chr); printf( "\nNumber of words: %d" , word+1); getch(); }

  #include <stdio.h> void main() { FILE *fp1, *fp2; char ch; fp1 = fopen( "abc.txt" , "r" ); fp2 = fopen( "xyz.txt" , "w" ); while ((ch = getc(fp1)) != EOF) putc(ch, fp2); fclose(fp1); fclose(fp2); getch(); }

#include <stdio.h> void main() { int a[10][10], b[10][10], c[10][10], i, j, row, col; printf( "\nEnter number of rows and columns: " ); scanf( "%d %d" , &row, &col); printf( "\nEnter elements of Array A:\n" ); for (i=0; i<row; i++) for (j=0; j<col; j++) scanf( "%d" , &a[i][j]); printf( "\nEnter elements of Array B:\n" ); for (i=0; i<row; i++) for (j=0; j<col; j++) scanf( "%d" , &b[i][j]); printf( "\nElements of Matrix A:\n\n" ); for (i=0; i<row; i++) { for (j=0; j<col; j++) printf( "\t%d" , a[i][j]); printf( "\n\n" ); } printf( "\nElements of Matrix B:\n\n" ); for (i=0; i<row; i++) { for (j=0; j<col; j++) printf( "\t%d" , b[i][j]); printf( "\n\n" ); }

1: #include<stdio.h> 2: #include<conio.h> 3: void main() 4: { 5: int e; 6: char ch; 7: clrscr(); 8: printf(“\n Enter a character : “); 9: scanf(“%c”,&ch); 10: e=ch; 11: printf(“\n The ASCII value of the character is : %d”,e); 12: getch(); 13: }

1: #include<stdio.h> 2: #include<conio.h> 3: int binary ( int ); 4: void main() 5: { 6: int num; 7: clrscr(); 8: printf(“\nEnter The Number: “); 9: scanf(“%d”,&num); 10: binary(num); 11: printf(“\n\n\n\n\nPress any key to exit…..”); 12: getch(); 13: } 14: //function to convert deciaml to binary 15: int binary ( int n) 16: { 17: int r; 18: r=n%2; 19: n=n/2; 20: if (n==0) 21: { 22: printf(“\nThe binary equivalent is %d”,r); 23: return (r); 24: } 25: else 26: binary(n); 27: printf(“%d”,r); 28: }

1: #include<stdio.h> 2: #include<conio.h> 3: void main() 4: { 5: int year; 6: clrscr(); 7: printf(“ENTER YEAR????”); 8: scanf(“%d”,&year); 9: year%100==0?(year %400==0?printf(“leap Year”) 10: :printf(“Not a Leap Year”)):(year%4==0? 11: printf(“Leap Year”):printf(“Not a leap Year”)); 12: printf(“\n\n\n\n\nPress any key to exit…”); 13: getch(); 14: } Technorati Tags: C Language , c Programs

1: #include<stdio.h> 2: #include<conio.h> 3: void main() 4: { 5: int leapdays,firstday,yr; 6: long int normaldays,totaldays; 7: clrscr(); 8: printf(“Enter year “); 9: scanf(“%d”,&yr); 10: normaldays=(yr-1)*365L; 11: leapdays=(yr-1)/4-(yr-1)/100+(yr-1)/400; 12: totaldays=normaldays+leapdays; 13: firstday=totaldays%7; 14: if (firstday==0) printf(“\nMonday”); 15: if (firstday==1) printf(“\Tuesday”); 16: if (firstday==2) printf(“\nWednesday”); 17: if (firstday==3) printf(“\nThrusday”); 18: if (firstday==4) printf(“\nFriday”); 19: if (firstday==5) printf(“\nSaturday”); 20: if (firstday==6) printf(“\nSunday”); 21: printf(“\n\n\n\n\nPress any key to exit….”); 22: getch(); 23: }

1: #include<stdio.h> 2: #include<conio.h> 3: void main() 4: { 5: int m1,m2,m3,m4,m5,aggr; 6: float per; 7: clrscr(); 8: printf(“\nEnter marks in 5 subject:”); 9: scanf(“%d%d%d%d%d”,&m1,&m2,&m3,&m4,&m5); 10: aggr=m1+m2+m3+m4+m5; 11: per=aggr/5; 12: printf(“\nAggregate Marks=%d”,aggr); 13: printf(“\nPercentage Marks=%f”,per); 14: printf(“\n\n\n\nPress any key yo exit….”); 15: getch(); 16: }

1: #include<stdio.h> 2: int main(){ 3: int a[50],size,i,j=0,big,secondbig; 4: printf( "Enter the size of the array: " ); 5: scanf( "%d" ,&size); 6: printf( "Enter %d elements in to the array: " , size); 7: for (i=0;i<size;i++) 8: scanf( "%d" ,&a[i]); 9: 10: big=a[0]; 11: for (i=1;i<size;i++){ 12: if (big<a[i]){ 13: big=a[i]; 14: j = i; 15: } 16: } 17:   18: secondbig=a[size-j-1]; 19: for (i=1;i<size;i++){ 20: if (secondbig <a[i] && j != i) 21: secondbig =a[i]; 22: } 23: 24: printf( "Second biggest: %d" , secondbig); 25: return 0; 26: } 27:   28: