stdlib.h in c

An Example Using stdlib.h

Here's a simple C program showcasing the use of stdlib.h for memory allocation and conversion:

#include <stdlib.h>
int main() {
    // Allocating memory
    int* ptr = (int*)malloc(sizeof(int));
    if(ptr != NULL){
        *ptr = 10; // Assigning value to allocated memory
        printf("Value: %d\n", *ptr);
    }

    // Converting string to integer
    char numStr[] = "123";
    int num = atoi(numStr);
    printf("Converted number: %d\n", num);

    // Free the allocated memory
    free(ptr);
    return 0;
}

Output

Also read, odd or even program in c

Frequently Asked Questions

What is the purpose of stdlib.h in C?

The stdlib.h library in C provides functions for tasks like memory management, process control, conversions, and others.

Do I need to install stdlib.h separately?

No, stdlib.h is part of the C Standard Library and comes bundled with any standard C compiler.

What does the atoi() function do?

The atoi() function converts a string to an integer.

Conclusion

The stdlib.h library in C is a powerful toolset offering numerous functionalities for general operations like memory management, process control, random number generation, and conversions. Its proper understanding and usage can lead to efficient and effective C programming. As with all things programming, remember to keep exploring, and keep practicing.
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