by Dinesh Thakur Category: Control Structures

C has GOTO statement but one must ensure not to use too much of goto statement in their program because its functionality is limited and it is only recommended as a last resort if structured solutions are much more complicated. First let us see what the goto statement does, its syntax and functionality. The goto is a unconditional branching statement used to transfer control of the program from one statement to another.

 
by Dinesh Thakur Category: Control Structures

Let us use variables m and n to represent two integer numbers and variable r to represent the remainder of their division, i. e., r = m % n. Euclid's algorithm to determine the GCD of two numbers m and n is given below and its action is illustrated form= 50 and n = 35.

 
by Dinesh Thakur Category: Control Structures

Three positive integer numbers a, band c, such that a<b<c form a Pythagorean triplet if c2= a2 +b2 , i. e,, a, b and c form the sides of a right-angled triangle. To select the values of a and b such that a < b and a, b < max, we can use nested for loops as shown below:

 
by Dinesh Thakur Category: Control Structures

1. if income is less thn, 1,50,000 then no tax
2. if taxable income is in the range 1,50,001-300,000 then charge 10% tax
3. if taxable income is in the range 3,00,001-500,000 then charge 20% tax
4. if taxable income is above 5,00,001 then charge 30% tax.

 
by Dinesh Thakur Category: Control Structures

A program to determine the sum of digits of a given non-negative integer number using a while loop is presented in Program. The program segment given below does the same thing using a do...while loop. 

 
by Dinesh Thakur Category: Control Structures

The program segment given below accepts a character from the keyboard and prints the name of the corresponding color, e. g., if the user enters character R, it prints Red. However, it handles only three colors, namely, red, green and blue.

 
by Dinesh Thakur Category: Control Structures

This code segment first accepts a range of values in variables m and n, both of type int. The variable num, also of type int, is used as the loop variable. It assumes values from m to n. For each value of loop variable num, the printf statement within the for loop is executed.

 
by Dinesh Thakur Category: Control Structures

C has looping , in which a sequence of statements are executed until some conditions for termination of the loop are satisfied.

 
by Dinesh Thakur Category: Control Structures

Let us use variables dd,mm and yy (all of type int)to represent the day, month and year in a given date. The given date is valid only if year (yy)is non-zero, month (mm)is in the range 1 to 12 and day of month (dd) is in the range 1 to mdays, the number of days in a given month mm. An algorithm to determine the validity of a given date is given below.

 
by Dinesh Thakur Category: Control Structures

As the name indicates, the prime factors of a given number are its factors that are also prime numbers, e.g., prime factors of 30 are 2, 3 and 5 but not 1, 6, 10, 15 and 30. One or more prime factors of a given number may repeat, e. g., prime factors of 120 are 2, 2, 2, 3 and 5.

 
by Dinesh Thakur Category: Control Structures

Switch statement is a powerful statement used to handle many alternatives and provides good presentation for C program. But there are some limitations with switch statement which are given below:

 
by Dinesh Thakur Category: Control Structures

Consider that we wish to print a given positive integer number in words, as a sequence of digit strings. For example, number 123 should be printed as One Two Three. This might be required in financial applications, for example, to print the cheque amount in words.

 
by Dinesh Thakur Category: Control Structures

C program to encrypt text using one of the simplest ciphers known as the "Caesar cipher." In this encryption scheme, we shift all characters by a given offset. For example, if we use an offset of 4, every occurrence of 'A' will be replaced by 'E', every occurrence of 'B' will be replaced by 'F', and so forth. The encrypted text can be decrypted by using the reverse process if know the offset used for the encryption.

 
by Dinesh Thakur Category: Control Structures

switch statement is generally best to use when you have more than two conditional expressions based on

a single variable of numeric type. For instance, rather than the code

 
by Dinesh Thakur Category: Control Structures

we determined the sum of digits of a non-negative integer number by determining the least significant digit and then removing it from given number.

 
by Dinesh Thakur Category: Control Structures

No, but it is not a bad idea to put default statements in switch statements for error- or logic-checking

purposes. For instance, the following switch statement is perfectly normal:

 
by Dinesh Thakur Category: Control Structures

The for loop given above prints a line of fifty dashes followed by a newline. The for loop uses i as the loop variable whose initial and final values are 0 and 49, respectively (note the < operator in i < 50). The update expression increments the value of i by 1.

 
by Dinesh Thakur Category: Control Structures

Both the switch and if-else-if statements enable us to select one of several alternative statements for execution. However, they differ in several aspects:

 

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About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.



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