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Strings are actually one-dimensional array of characters terminated by a null character '0'. Thus a null-terminated string contains the characters that comprise the string followed by a null.
The following declaration and initialization create a string consisting of the word 'Hello'. To hold the null character at the end of the array, the size of the character array containing the string is one more than the number of characters in the word 'Hello.'
If you follow the rule of array initialization then you can write the above statement as follows −
Following is the memory presentation of the above defined string in C/C++ −
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C - Operators - An operator is a symbol that tells the compiler to perform specific mathematical or logical functions. C language is rich in built-in operators and provides the Home. Aug 29, 2019 Incredible.NET IDE with the power of ReSharper! Rider is used across our entire dev team using Windows and macOS. Rider supports.NET Framework, the new cross-platform.NET Core, and Mono based projects. This lets you develop a wide range. Cond operand decides the number of places to shift. Or in other words left shifting an integer “x” with an integer “y” (x.
Actually, you do not place the null character at the end of a string constant. The C compiler automatically places the '0' at the end of the string when it initializes the array. Let us try to print the above mentioned string −
When the above code is compiled and executed, it produces the following result −
C supports a wide range of functions that manipulate null-terminated strings −
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| Sr.No. | Function & Purpose |
|---|---|
| 1 |
strcpy(s1, s2); Copies string s2 into string s1. |
| 2 |
strcat(s1, s2); Concatenates string s2 onto the end of string s1. |
| 3 |
strlen(s1); Returns the length of string s1. |
| 4 |
strcmp(s1, s2); Returns 0 if s1 and s2 are the same; less than 0 if s1<s2; greater than 0 if s1>s2. |
| 5 |
strchr(s1, ch); When the installing process is done, the Quik for Mac installer will close. Returns a pointer to the first occurrence of character ch in string s1. |
| 6 |
strstr(s1, s2); Returns a pointer to the first occurrence of string s2 in string s1. |
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The following example uses some of the above-mentioned functions −
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When the above code is compiled and executed, it produces the following result −