The test expression done on exact statement. The good habit of using test expression on exact or fulfill statement. So do not use floating point numbers for checking for equality in the test expression.

Semoclone ( ; ) is one of the best sensitive symbols in programming. Placing a semicolon ( ; ) after the WHILE or FOR loop is not a syntax error. So it will not be reported by the compiler. However, it is considered to be a logical error as it change

Missing the inclusion of appropriate header file in c program will generate an error. Such a program may compile but the linker will given an error message as it will not be able to find the functions used in the program.

When you are using SWITCH case, it is important to keep in mind that the inclusion of DEFAULT LABEL. This will inform you whether you are executing your program in right or wrong way. So, it is always recommended to use DEFAULT LABEL in the SWITCH st

Specifier is a typedef-name and a very sensitive in C programming. Using an incorrect specifier for the data type being read or written will generate a run time error.

// AHF C PROGRAM SOLVING //solving here ITERATIVES STATEMENTS type of programming problem

#include<stdio.h> #include<math.h> #define pf printf int main() { int n,m,j; //taking the number to continue loop from where the loop will start pf("Enter the first number: "); scanf("%d",&n); //taking the number to stop loop pf("\nEnter the second number: "); scanf("%d",&m); for(j=n;j<=m;j++) { if(j%2==0) pf("\n%d is even number.",j); else pf("\n%d is odd number.",j); } return 0; }

Enter the first number: 1 Enter the second number: 10 1 is odd number. 2 is even number. 3 is odd number. 4 is even number. 5 is odd number. 6 is even number. 7 is odd number. 8 is even number. 9 is odd number. 10 is even number.

- Print first N natural number
- Print N natural number in a given range ( ascending way )
- Summation of first N natural number
- Calculate sum and average of first N natural number
- Print natural number in a given range ( decending way )
- Factorial of an integer number
- Input any key from key-board and display key's feature
- Calculate Summation of this series 1 + 1/2
^{2}+ 1/3^{2}+ ...... + 1/x^{2} - Calculate Summation of this series 1/2
^{2}+ 1/3^{3}+ ...... + 1/(x+1)^{(x+1)} - Calculate Summation of this series 1 + 2
^{2}/2 + 3^{2}/3 + ...... + x^{2}/x - Print 1 3 6 10 15 21 ........ this series Print even and odd number in a range

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