String Functions in C

<div dir="ltr" style="text-align: left;" trbidi="on"> <div class="separator" style="clear: both; text-align: center;"> </div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZjCJeA53vLlH7R7MCo-z_XfOAv6F-FmIowaFP1tpLoKcE03JcfOa6PliBhWjt2CCnLc0okTUEN8DJVOSExzTiYx-KsMU8mpi8-Ior0IqcD0lWysvz7qj4YvraULTFF3RkmoH-QRW_J0De/s1600/string-functions-in-c.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img alt="string functions in C" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZjCJeA53vLlH7R7MCo-z_XfOAv6F-FmIowaFP1tpLoKcE03JcfOa6PliBhWjt2CCnLc0okTUEN8DJVOSExzTiYx-KsMU8mpi8-Ior0IqcD0lWysvz7qj4YvraULTFF3RkmoH-QRW_J0De/s1600/string-functions-in-c.png" title="string functions in C" /></a></div> <b><br /></b> <b>String Function:</b><br /> <b><br /></b> The standard library for C string functions is string.h. This header file defines tons of useful string manipulation functions including:<br /> <ul style="text-align: left;"> <li>strcmp</li> <li>strcat</li> <li>strcpy</li> <li>strlen</li> </ul> <div> <b>strcmp:</b></div> <div> strcmp() in C programming language is used to compare two string. If both the strings are equal then it gives the result as zero but if not then it gives the numeric difference between the first non matching character in the string.</div> <div> <br /></div> <div> <b>Syntax:</b><br /> <b><br /></b></div> <div> <pre class="_codebox">int strcmp(const char *str1, const char *str2); </pre> <br /></div> <div> <b>Example:</b><br /> <b><br /></b></div> <div> <pre class="c" name="code">int main() { char str1[30], str2[30]; printf("Enter first string : "); scanf("%s", &str1); printf("Enter second string : "); scanf("%s", &str2); if(strcmp(str1, str2)==0)) printf("Both strings are equal.") else printf("strings are not equal."); return 0; }</pre> <br /></div> <div> <b>Output:</b><br /> <b><br /></b> <br /> <pre class="_codebox">Enter first string : studycodemaster Enter second string : studycodemaster Both strings are equal. </pre> <b><br /></b> <b>strcat:</b></div> <div> The strcat() function is used for string concatenation in C programming language. Which means this function is used to join the two string together.<br /> <br /></div> <div> <b>Syntax:</b><br /> <br /></div> <pre class="_codebox">strcat(string1, string2); </pre> <div> <br /> <b>Example:</b></div> <br /> <pre class="c" name="code">int main() { char string1[50]="www.studycodemaster"; char string2[5]=".blogspot.com"; printf("Before concatenation the strings are : "); printf("\nstring1 : %s", string1); printf("\nstring2 : %s", string2); printf("\nAfter concatenation the string is : ") printf("string : %s", strcat(string1, string2)); return 0; }</pre> <br /> <div> <b>Output:</b><br /> <b><br /></b> <br /> <pre class="_codebox">Before concatenation the strings are : string1 : www.studycodemaster string2 : .blogspot.com After concatenation the string is : string : www.studycodemaster.blogspot.com </pre> <b><br /></b> <b>strcpy:</b></div> <div> strcpy() function is used to copies a string from a source location to a destination location and provides a null character to terminate the string.</div> <br /> <div> <b>Syntax:</b><br /> <b><br /></b></div> <div> <div> <pre class="_codebox">strcpy(destination, source); </pre> <br /></div> <div> <b>Example:</b><br /> <b><br /></b></div> </div> <div> <pre class="c" name="code">int main() { char string1[50], string2[50]; printf("Enter string : "); scanf("%s", &string1); strcpy(string2, string1); printf("string1 : %s ", string1); printf("string2 : "%s , string2); return 0; }</pre> </div> <br /> <div> <b>Output:</b><br /> <b><br /></b> <br /> <pre class="_codebox">Enter string : www.studycodemaster.blogspot.com string1 : www.studycodemaster.blogspot.com string2 : www.studycodemaster.blogspot.com </pre> <b><br /></b> <b>strlen:</b></div> <div> The strlen() is used to calculate the length of the string. Which means strlen function counts the total number of characters present in the string which includes alphabets, numbers, and all special characters including blank spaces.</div> <br /> <div> <b>Syntax:</b><br /> <b><br /></b></div> <div> <div> <pre class="_codebox">count = strlen(stringvariable); </pre> <br /></div> <div> <b>Example:</b><br /> <b><br /></b></div> </div> <div> <pre class="c" name="code">int main() { char str[20]; printf("Enter a string : "); scanf("%s", &str); printf("Length of the string is : %d", strlen(str)); return 0; } </pre> <br /> <b>Output:</b><br /> <br /> <pre class="_code">Enter a string : www.studycodemaster.blogspot.com Length of the string is : 32 </pre> </div> </div>

String Functions in C

String Function: The standard library for C string functions is string.h. This header file defines tons of useful string manipulatio...

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