#include <stdio.h> #include <math.h> double a=0.2,b=1.0,i,h,x,s; int n=50,k; void ffa(void) {h=(b-a)/n;x=a+h/2;s=0; for(k=1;k<=n;k++){s+=sin(x);x+=h;} s*=h;} void main(void) { ffa(); printf("значение=%.8f\n",s);}