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 #include<stdio.h> #include<conio.h> #include<math.h> /* Define function here */ #define f(x) 1/(1+x*x) int main() { float lower, upper, integration=0.0, stepSize, k; int i, subInterval; clrscr(); /* Input */ printf("Enter lower limit of integration: "); scanf("%f", &lower); printf("Enter upper limit of integration: "); scanf("%f", &upper); printf("Enter number of sub intervals: "); scanf("%d", &subInterval); /* Calculation */ /* Finding step size */ stepSize = (upper - lower)/subInterval; /* Finding Integration Value */ integration = f(lower) + f(upper); for(i=1; i<= subInterval-1; i++) { k = lower + i*stepSize; if(i%2==0) { integration = integration + 2 * f(k); } else { integration = integration + 4 * f(k); } } integration = integration * stepSize/3; printf("\nRequired value of integration is: %.3f", integration); getch(); return 0; } Output Enter lower limit of integration: 0 Enter