Write a C program to swap two numbers using pointers and functions. How to swap two numbers using call by reference method. Logic to swap two number using pointers in C program.
Example
Input
Input num1: 10 Input num2: 20
Output
Values after swapping: Num1 = 20 Num2 = 10
Write a C program to read two numbers from user and add them using pointers. How to find sum of two number using pointers in C programming. Program to perform arithmetic operations on number using pointers.
Example
Input
Input num1: 10 Input num2: 20
Output
Sum = 30 Difference = -10 Product = 200 Quotient = 0
Write a C program to create, initialize and demonstrate the use of pointers. How to access values and addresses using a pointer variable in C programming.
Write a C program to input any string from user and find the first occurrence of a given character in the string. How to find the first occurrence of a given character in a string in C programming. Logic to find first occurrence of a character in a string in C programming.
Example
Input
Input string: I love Codeforwin. Input character to search: o
Output
'o' is found at index 3
Write a C program to compare two strings using loop character by character. How to compare two strings without using inbuilt library function strcmp() in C programming. Comparing two strings lexicographically without using string library functions. How to compare two strings using strcmp() library function.
Example
Input
Input string1: Learn at Codeforwin. Input string2: Learn at Codeforwin.
Output
Both strings are lexographically equal.
Write a C program to concatenate two strings in single string. How to concatenate two strings to one without using strcat() library function. Adding two strings into one without using inbuilt library function. Logic to concatenate two strings in C programming. C program to concatenate two strings using strcat() library function.
Example
Input
Input string1: I love Input string2: Codeforwin
Output
Concatenated string: I love Codeforwin
Write a C program to copy one string to another string using loop. C program to copy one string to another without using inbuilt library function strcpy(). How to copy one string to another without using inbuilt string library function in C programming. Effective logic to copy strings in C programming. How to copy one string to another string using strcpy() function in C program.
Example
Input
Input string: I love Codeforwin!
Output
Original string: I love Codeforwin! Copied string: I love Codeforwin!
Write a C program to convert uppercase string to lowercase using for loop. How to convert uppercase string to lowercase without using inbuilt library function strlwr(). How to convert string to lowercase using strlwr() string function.
Example
Input
Input string: I love CODEFORWIN.
Output
Lowercase string: i love codeforwin.
Write a C program to convert string from lowercase to uppercase string using loop. How to convert string from lowercase to uppercase using for loop in C programming. C program to convert lowercase to uppercase string using strupr() string function.
Example
Input
Input string: I love Codeforwin.
Output
I LOVE CODEFORWIN.
Write a C program to find reverse of a given string using loop. How to find reverse of any given string using loop in C programming. Logic to find reverse of a string without using strrev() function in C. C program to reverse a string using strrev() string function.
Example
Input
Output
Reverse string: olleH