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char *c = "Hello"; 

If a statement such as {{c\[0\] = 'C'}} were placed following the above declaration, the code would likely still compile cleanly, but the result of the assignment is undefined as string literals are considered constant.

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In this compliant solution, the characters referred to by the pointer c are const-qualified, meaning that any attempts to assign them to different values is an error.

const char const *c = "Hello"; 

Compliant Solution 2

In cases where the string is meant to be modified, use initialization instead of assignment. In this compliant solution, c is a modifiable char array which has been initialized using the contents of the corresponding string literal.

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Adding in the const keyword will likely generate a compiler warning, as the assignment of CMUfullname to school discards the const qualifier. Any modifications to the contents of school after this assignment will lead to errors.

const char const *CMUfullname = "Carnegie Mellon University";
char *school;

/* Get school from user input and validate */

if (strcmp(school, "CMU")) {
    school = CMUfullname;
}

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The compliant solution uses the const keyword to protect the string literal, as well as using strcpy() to copy the value of CMUfullname into school, allowing future modification of school.

const char const *CMUfullname = "Carnegie Mellon University";
char *school;

/* Get school from user input and validate */

if (strcmp(school, "CMU")) {
    /* Allocate correct amount of space for copy */
    strcpy(school, CMUfullname);
}

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