What is the significance of the "const" keyword in the declaration of pointers such as "int *a, const *c"?

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The "const" keyword in the declaration of pointers such as "int *a, const *c" indicates that the value pointed to by the pointer "c" cannot be modified. This means that the variable or memory location being pointed to is read-only and cannot be changed through the pointer "c". Therefore, attempting to modify the value pointed to by "c" will lead to a compilation error. This is important in ensuring the integrity of the data being pointed to, especially in cases where it is important to preserve the original data or to prevent data corruption.