C programming basic

Basic Algebraic Functions:

C programming basic algebraic operations such as addition, subtraction, multiplication, and division using the built-in arithmetic operators.

#include <stdio.h>

int main()
{
    int a = 5;
    int b = 2;
    int c;

    // Addition
    c = a + b;
    printf("%d + %d = %d\n", a, b, c);

    // Subtraction
    c = a - b;
    printf("%d - %d = %d\n", a, b, c);

    // Multiplication
    c = a * b;
    printf("%d * %d = %d\n", a, b, c);

    // Division
    c = a / b;
    printf("%d / %d = %d\n", a, b, c);

    return 0;
}
Output

The modulus operator (%) to find the remainder of a division operation.

For example:

#include <stdio.h>

int main()
{
    int a = 7;
    int b = 2;
    int c;

    c = a % b;
    printf("%d %% %d = %d\n", a, b, c);

    return 0;
}
Output

String functions:

In C programming, you can use the string concatenation operator (strcat) to concatenate (combine) two strings. The strcat function is defined in the string.h header file, so you will need to include this file at the top of your program.

Example of strcat:

#include <stdio.h>
#include <string.h>

int main()
{
    char s1[100] = "Hello";
    char s2[100] = ", world!";
    char s3[200];

    strcat(s3, s1);
    strcat(s3, s2);

    printf("%s\n", s3);

    return 0;
}

You can also use the strncat function to concatenate a specified number of characters from one string to another.

For example:

#include <stdio.h>
#include <string.h>

int main()
{
    char s1[100] = "Hello";
    char s2[100] = ", world!";
    char s3[200];

    strncat(s3, s1, 5);
    strncat(s3, s2, 7);

    printf("%s\n", s3);

    return 0;
}

You can also use the strcmp function to compare two strings. The strcmp function returns 0 if the two strings are equal, a negative value if the first string is less than the second string, and a positive value if the first string is greater than the second string.

You can also use the strcmp function to compare two strings. The strcmp function returns 0 if the two strings are equal, a negative value if the first string is less than the second string, and a positive value if the first string is greater than the second string.

Here is an example of using the strcmp function:

#include <stdio.h>
#include <string.h>

int main()
{
    char s1[100] = "Hello";
    char s2[100] = "Hello";
    char s3[100] = "World";

    int cmp1 = strcmp(s1, s2);
    int cmp2 = strcmp(s1, s3);

    printf("%d\n", cmp1);
    printf("%d\n", cmp2);

    return 0;
}

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