#1 SALINITY /*–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––*/ /* This program uses linear interpolation to */ /* compute the freezing temperature of seawater. */ #include <stdio.h> #include <math.h> int main(void) { /* Declare variables. */ double a, f_a, b, f_b, c, f_c; /* Get user input from the keyboard. */ printf("Use ppt for salinity values. \n"); printf("Use degrees F for temperatures. \n"); printf("Enter first salinity and freezing temperature: \n"); scanf("%lf %lf",&a,&f_a); printf("Enter second salinity and freezing temperature: \n"); scanf("%lf %lf",&c,&f_c); printf("Enter new salinity: \n"); scanf("%lf",&b); // Use linear interpolation to compute new freezing temperature. f_b = f_a + (b-a)/(c-a)*(f_c - f_a); /* ...