Does anyone know what this warning means or what is wrong with my function code? Lmk if I should post more pictures

Idk i just need points lol

Answercrankcase;

There’s also the option of making a new one

Cprogram to find //perimeter of rectangle printf(" \n perimeter of rectangle \n"); printf(""); printf("\n enter width and length of the rectangle : "); scanf("%f%f", & width,& length); perimeter = 2 * (width + length); printf("perimeter of rectangle is: %.3f", perimeter);