Abstract
In this paper, we approximate the integral of fuzzy-number-valued functions using generalized quadrature rule and obtain its error estimate. Utilizing the generalized quadrature rule and successive approximations method, we construct an iterative approach to find the numerical approximation of solutions. Moreover, we investigate the error analysis of the numerical method, which guarantees pointwise convergence. Then we apply the presented method to two numerical experiments to present the accuracy and convergence of the method.